evaluate the expression. 1.25*0.9-1.25*0.3+1.25*0.4

Answers

Answer 1

The expression when evaluated is 1.25

How to evaluate the expression

From the question, we have the following parameters that can be used in our computation:

1.25*0.9-1.25*0.3+1.25*0.4

Evaluate the products in the expression

So, we have the following representation

1.25*0.9-1.25*0.3+1.25*0.4 = 1.125 - 0.375 + 0.5

Evaluate the like terms

1.25*0.9-1.25*0.3+1.25*0.4 = 1.25

Hence the solution is 1.25

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Related Questions

Which event is most likely to occur?
O Rolling a multiple of 4 on a eight-sided die, numbered from 1 to 8.
Spinning a spinner divided into four equal-sized sections colored
red/green/yellow/blue and landing on pink.
Winning a raffle that sold a total of 100 tickets, if you buy 53 tickets.
Reaching into a bag full of 50 strawberry chews and 10 cherry chews without
looking and pulling out a strawberry chew.

Answers

The event with the highest probability is "reaching into a bag full of 50 strawberry chews and 10 cherry chews without looking and pulling out a strawberry chew", with a probability of 5/6 or approximately 0.83. Option D

How to find the Which event is most likely to occur

To determine which event is most likely to occur, we need to compare the probabilities of each event happening.

Rolling a multiple of 4 on an eight-sided die:

There are 8 possible outcomes when rolling an eight-sided die, and 2 of them are multiples of 4 (4 and 8). So, the probability of rolling a multiple of 4 is 2/8, or 1/4.

Spinning a spinner and landing on pink:

There are 4 possible outcomes when spinning the spinner, and only one of them is pink. So, the probability of landing on pink is 1/4.

Winning a raffle that sold a total of 100 tickets, if you buy 53 tickets:

The total number of possible outcomes is the total number of tickets sold, which is 100. The number of favorable outcomes is the number of tickets the person bought, which is 53. So, the probability of winning the raffle is 53/100.

Reaching into a bag full of 50 strawberry chews and 10 cherry chews without looking and pulling out a strawberry chew:

The total number of possible outcomes is the total number of candies in the bag, which is 50 + 10 = 60.

The number of favorable outcomes is the number of strawberry chews in the bag, which is 50. So, the probability of pulling out a strawberry chew is 50/60, which simplifies to 5/6.

Comparing the probabilities, we can see that the event with the highest probability is "reaching into a bag full of 50 strawberry chews and 10 cherry chews without looking and pulling out a strawberry chew", with a probability of 5/6 or approximately 0.83. Therefore, this event is the most likely to occur.

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A line that makes up the boundary of an inequality (including the line itself) has points (4, 5),(1, −1) sitting on
it, find the inequality (and graph it) given that the point (−3, −5) makes the inequality false.

Answers

Using the graph of the line, we can see that the inequality, including the line which is the boundary of inequality, is:

 y + 2x ≥ -3

What is meant by inequality?

An inequality in mathematics is a relation that compares two numbers or other mathematical expressions in an unequal way. The majority of the time, size comparisons between two numbers on the number line are made. An inequality symbol has non-equal expressions on both sides. It indicates that the phrase on the left should be bigger or smaller than the expression on the right, or vice versa. Literal inequalities are relationships between two algebraic expressions that are expressed using inequality symbols.

Given that the boundary line of equality has points (4,5) and (1,-1) on it.

So we can write the equation of the line.

Slope m = [tex]\frac{y_2-y_1}{x_2-x_1}[/tex] = -1-5 / 1-4 = 2

Equation of the line:

y - y1 = m (x-x1)

y - 5 = 2(x - 4)

y - 5 = 2x - 8

y = 2x - 3

y + 2x = -3

Point (−3, −5) makes the inequality false.

Substituting,

-5 + 2 * -3 = -5 - 6 = -11

y + 2x should not be -11

When graphing the line it should not include the point (−3, −5).

This point is present on the lower portion of the line.

So the upper portion of the line should be the inequality including the line itself.

Therefore using the graph of line, we can see that the inequality, including the line which is the boundary of inequality, is:

 y + 2x ≥ -3

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given that f(x) =x^2 - 13x + 36 and g (x) = x -4, find f (x) -g (x) and express the result as a polynomial in simplest form.

Answers

Answer:

f(x)-g(x)

= [tex](x^{2} - 13x + 36) - ( x -4)[/tex]

= [tex]x^{2} -13x+36-x+4[/tex]

= [tex]x^{2} -14x-40[/tex]

Solve the equation:

f/28=27

f=
Show step by step please

Answers

Answer: f=756

Step-by-step explanation:

f/28=7

multiply both sides of the equation by 28

28 x f/28=28 x 27

cancel out the greatest common factor 28

f=28 x 27

multiply 28 x 27

f=756

Write the sentence as an equation.
180 and t more is 267

Answers

Answer:

180 + t = 267

Step-by-step explanation:

180 and t more is the same as adding t to 180.

"is" means equals

Find the values of the variable

Answers

Substituting this expression for BD into the area formula, we get:b

1/2 * 10 * (4z/5) = 1/2 * z * 8

Simplifying and solving for z, we get:

20z/25 = 4z

16z = 100

z = 6.25

Therefore, the value of z is 6.25.

Describe Triangles?

A triangle is a closed geometric figure that is formed by connecting three straight line segments called sides. These sides meet at three points called vertices. Triangles are one of the simplest and most fundamental shapes in geometry and can be found in many natural and man-made objects.

Triangles can be classified into different types based on their sides and angles.

By sides:

Equilateral triangle: all three sides are equal in length.

Isosceles triangle: two sides are equal in length.

Scalene triangle: all three sides are different in length.

By angles:

Acute triangle: all three angles are acute (less than 90 degrees).

Right triangle: one angle is a right angle (exactly 90 degrees).

Obtuse triangle: one angle is an obtuse angle (greater than 90 degrees).

Triangles have many properties and are used in various fields such as architecture, engineering, physics, and mathematics. They are also commonly used in trigonometry to solve problems involving angles and distances.

We can use the Pythagorean theorem to find the value of z:

[tex]AC^2 = AD^2 + DC^2[/tex]

Since BD is perpendicular to AC, we know that DC = BC. We can also use the fact that AB and BD are altitudes of triangle ABC to find the area of the triangle in two different ways:

Area of triangle ABC = 1/2 * AB * BD = 1/2 * AC * AD

Substituting the given values, we get:

1/2 * 10 * BD = 1/2 * z * 8

Simplifying this equation, we get:

BD = 4z/5

Substituting this expression for BD into the area formula, we get:b

1/2 * 10 * (4z/5) = 1/2 * z * 8

Simplifying and solving for z, we get:

20z/25 = 4z

16z = 100

z = 6.25

Therefore, the value of z is 6.25.

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Y=4x-22 substitution method
2x+3y=4

Answers

The x and y values are x=5 and y= -2

What is the solution to an equation?

In order to make the equation's equality true, the unknown variables must be given values as a solution. In other words, the definition of a solution is a value or set of values (one for each unknown) that, when used as a replacement for the unknowns, transforms the equation into equality.

y=4x-22 ----(1)

2x+3y=4------(2)

Substitute (1) into (2)

=> 2x+3(4x-22)=4

=> 2x+12x-66 = 4

=> 14x = 4+66

=> 14x = 70

=> x=70/14 = 5

(1) => y=4*5-22 = 20 - 22 = -2

So, the x and y values are x=5 and y= -2

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The three side lengths of four triangles are given. Which triangle is a right triangle? Triangle 1: 13‾‾‾√ 13 , 6, 7 Triangle 2: 7, 8, 13 Triangle 3: 10, 11, 12 Triangle 4: 10‾‾‾√ 10 , 9, 8

Answers

The triangle whose sides are √13, 6, and 7, is a right triangle.

What is the right triangle?

A right triangle is defined as a triangle with one right angle or two perpendicular sides. The longest side of a right triangle is called the hypotenuse.

Pythagorean Theorem :

The square on the hypotenuse is equal to the total of the squares on the legs of a right triangle.

Mathematically, let r be the length of the hypotenuse of a right triangle. Again let p, q be the lengths of other sides of this triangle. By the Pythagorean Theorem,

r² = p² + q².

How to solve this problem?

We just check which triangle's sides follow the above theorem.

Option A (Triangle with sides √13, 6, and 7 ):

13 + 36 = 49

i.e. (√13)² + 6² = 7²

This triangle's sides follow the Pythagorean Theorem.

So, the triangle with sides √13, 6, and 7 is a right triangle.

Option B (Triangle with sides 7, 8, and 13 ):

49 + 64 ≠ 169

i.e. 7² + 8² ≠ 13²

This triangle's sides do not follow the Pythagorean Theorem.

So, the triangle with sides 7, 8, and 13 is not a right triangle.

Option C (Triangle with sides 10, 11, and 12 ):

100 + 121 ≠ 144

i.e. 10² + 11² ≠ 12²

This triangle's sides do not follow the Pythagorean Theorem.

So, the triangle with sides 10, 11, and 12 is not a right triangle.

Option D (Triangle with sides √10, 9, and 8 ):

10 + 64 ≠ 81

i.e. (√10)² + 8² ≠ 9²

This triangle's sides do not follow the Pythagorean Theorem.

So, the triangle with sides √10, 9, and 8 is not a right triangle.

Therefore the triangle whose sides are √13, 6, and 7, is a right triangle. So, option A is correct.

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Pre-calc will give brainliest

Answers

Answer:

[tex]S_n= n^2+4n[/tex]

[tex]n=11[/tex]

Step-by-step explanation:

The given arithmetic series is 5 + 7 + 9 + ...

From inspection of the given series, we can see that the first term is 5.

The common difference is the difference between consecutive terms. Therefore, the common difference of the given series is 2.

[tex]\boxed{\begin{minipage}{7.3 cm}\underline{Sum of the first $n$ terms of an arithmetic series}\\\\$S_n=\dfrac{1}{2}n[2a+(n-1)d]$\\\\where:\\\phantom{ww}$\bullet$ $a$ is the first term. \\ \phantom{ww}$\bullet$ $d$ is the common difference.\\ \phantom{ww}$\bullet$ $n$ is the position of the term.\\\end{minipage}}[/tex]

To determine an equation for the sum of the first n terms of the given series, substitute a = 5 and d = 2 into the formula.

[tex]\implies S_n=\dfrac{1}{2}n\left[2(5)+(n-1)(2)\right][/tex]

[tex]\implies S_n=\dfrac{1}{2}n\left[10+2n-2\right][/tex]

[tex]\implies S_n=\dfrac{1}{2}n\left[2n+8\right][/tex]

[tex]\implies S_n= n^2+4n[/tex]

To find the value of n, substitute Sₙ = 165 into the formula and solve for n:

[tex]\implies n^2+4n=165[/tex]

[tex]\implies n^2+4n-165=0[/tex]

[tex]\implies n^2+15n-11n-165=0[/tex]

[tex]\implies n(n+15)-11(n+15)=0[/tex]

[tex]\implies (n-11)(n+15)=0[/tex]

Apply the zero product property:

[tex](n-11)=0 \implies n=11[/tex]

[tex](n+15)=0 \implies n=-15[/tex]

Therefore, as the value of n is positive, the value of n for which the series has a sum of 165 is 11.

Write an equation in
point-slope form for the line
shown on the graph.
Use the right-hand point.
= 2
S
5
4
3
2
+
654321
+4
-2
-3
&
-5

123456
Submit
X Cive up
< Previous
> Skip
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Save Can

Answers

The required point slope of the line shown in the graph is y + 4 = 2(x - 3).

What is the slope of the line?

The slope of the line is a tangent angle made by line with horizontal. i.e. m =tanx where x in degrees.

Here,
From the graph, we have two points on the line (3, -4) and (6, 2)

The slope of the line, with the help of the two-point, is given as,

m = (y₂ - y₁) /  (x₂ - x₁)

m = 2 + 4 / 6 - 3
m = 6/3
m = 2

Now,
The equation of the line having a slope of m = 2 and passing through (3, -4) is given as

y - y₁ = m (x - x₁)

y + 4 = 2(x - 3)
y = 2x - 6 - 4
y = 2x - 10

Thus, the required point slope of the line shown in the graph is y + 4 = 2(x - 3).

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Veston 20 This scatter plot shows the relationship between the age and the average emails per day. The line of best fit is shown on the graph. a. The y-intercept of the estimated line of best fit is at (0, b). Enter the approximate value of b. b= (Enter your estimate to the nearest whole number.) b. Enter the approximate slope of the estimated line of best fit in the second box. slope=24 (Enter your estimate to the nearest tenth.) Average Emails per Day 40 30 20 10 0 0 Emails per Day by Age 12 24 36 48 60 Age 72​

Answers

Answer:

Error refresh.

Step-by-step explanatithanksforfreepointlolon:

Answer:

a. The y-intercept of the estimated line of best fit is at (0, b). Enter the approximate value of b.

b. Approximately 8.

b. Enter the approximate slope of the estimated line of best fit in the second box. slope=24 (Enter your estimate to the nearest tenth.)

Approximately 2.4.

Easy math please help - 30 points

a) Calculate the length of Road C in the image below. Show your work.

b) If a student rides her bike at an average speed of 19.5 km/h, how long will it take her to travel to school using Road C and Road B? Show your work.

c) How much quicker will it be for this student to travel to school along Road A? Show your work.

Answers

Using Pythagoras' Theorem, we found the length of Road C and the respective time taken to travel along each road.

What is meant by Pythagoras' theorem?

The Pythagoras' theorem, is a basic relationship between a right triangle's three sides in Euclidean geometry. According to this statement, the areas of the squares on the other two sides add up to the size of the square whose side is the hypotenuse. In essence, Pythagoras' theorem is used to determine a triangle's angle and length of an unknown side. This theorem allows us to obtain the hypotenuse, perpendicular, and base formulas.

The given figure is a right triangle.

The length of road A = 16.01 km

The length of road B = 10 km

a) The length of road C can be found using Pythagoras' theorem.

From figure,

A² = B² + C²

16.01 ² = 10² + C²

C² = 156.32

C = 12.5 km

b) Speed of bike = 19.5 km/h

   Length of road C = 12.5 km

Time = Length/speed = 12.5/19.5 = 0.64 hours

 Length of road B =10 km

Time = Length/speed = 10/19.5 = 0.51 hours

c) Length of road A = 16.01

Time taken = Length/speed = 16.01/19.5 = 0.82 hours.

Therefore using Pythagoras' Theorem, we found the length of Road C and the respective time taken to travel along each road.

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A store is offering 20% discounts on new laptops and 10% discounts on new printers when the two are purchased together. The original prices of the two together is at least $1,050. The discounted price exceeds $860. Which system of inequalities can be used to find the possible original prices of a laptop, x, and of a printer, y?​

Answers

The system of inequalities that can be used to find the possible original prices of a laptop, x, and of a printer, y is: x + y ≥ 1050 and 0.8x + 0.9y > 860

How to determine the system of inequalities

Let x be the original price of the laptop and y be the original price of the printer.

So, the discounted price of the laptop is 0.8x and the discounted price of the printer is 0.9y

If the two are purchased together, the total discounted price is:

0.8x + 0.9y

This exceeds $860

0.8x + 0.9y > 860

The original prices of the two together is at least $1,050.

This can be written as:

x + y ≥ 1050

So, we have

x + y ≥ 1050 and 0.8x + 0.9y > 860

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What is 50% of 36??Please help me

Answers

The value of expression 50% of 36 is,

⇒ 50% of 36 = 18

What is mean by Percentage?

A number or ratio that can be expressed as a fraction of 100 or a relative value indicating hundredth part of any quantity is called percentage.

Given that;

The expression is,

⇒ 50% of 36

Now, We can simplified as;

The expression is,

⇒ 50% of 36

By definition of percent we get;

⇒ 50/100 × 36

⇒ 1/2 × 36

⇒ 36/2

⇒ 18

Thus, The value of 50% of 36 is,

⇒  50% of 36 = 18

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A fair die has 12 sides and they are labeled 1, 2, 3, …, 12. All answers should be in fraction form.

What is the probability of rolling the die and it lands with the 3 face on top?
What is the probability of rolling the die and it lands with the 3 or a 7 face on top?
What is the probability of rolling the die and it lands with a 15 face on top?

Answers

As we discovered in chapter, there is a 1/12 chance of getting a 3.

What is a probability example?

By reducing the number of successful effects by the total amount of possible outcomes, probability—the chance that a will occur—is determined. A coin toss serves as the most fundamental example. There are just two results when users flip a coin: either it shows up heads or tails.

There are 12 potential results in total because the die has 12 sides.

(1) Since there is only one side of the die with a 3 on it and all sides are equally probable, the chance of rolling the die and having the 3 face on top is 1/12.

(2) The likelihood that the die will fall on top with a 3 or a 7 is calculated as the product of the odds of rolling a 3 and a 7 minus the likelihood of simultaneously rolling a 3 and a 7. (which is zero, since the die has only one side).

As we discovered in chapter, there is a 1/12 chance of getting a 3. (1). Given that the dice only has a 7 on one side, the likelihood of getting a 7 is also 1/12. The likelihood of tossing the dice and having the 3 or 7 face up is therefore:

1/12 + 1/12 - 0 = 1/6

(3) Since the die doesn't have a face marked "15," there is no chance that tossing the die will result in a 15 face landing on top.

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(a) Select each constant that is definitely positive.
(b) Select each constant that is definitely between 0 and 1.
(c) Select each constant that could be between 0 and 1 or is definitely between 0 and 1.
(d) Which two of these constants are definitely equal?
(e) Which one of the following pairs of constants could be equal?

Answers

The variable which is always positive will be a, b, c, d, p, and q. The constant that lies between 0 to 1 will be 'b'. And the two constants that are definitely equal will be 'a' and 'c'.

What is an exponent?

Let 'a' is the leading coefficient and 'b' is the factor.

The exponent is given as,

y = a(b)ˣ

Some points regarding the exponent function:

If the value of 'b' is greater than one, then the graph will be increasing in nature.If the value of 'b' is less than one, then the graph will be decreasing in nature.If the value of 'b' is equal to one, then the graph will be constant in nature.If 'a' is positive, the graph will be above the line.If 'a' is negative, the graph will be below the line.If 'a' is the same for two exponent equations, then the graph has the same y-intercept.

The variable which is always positive will be a, b, c, d, p, and q. The constant that lies between 0 to 1 will be 'b'. And the two constants that are definitely equal will be 'a' and 'c'.

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Part of Thor's job at a nonprofit organization, Rag Na Care, is to simply answer the phone to collect donations. The data collected shows a weak
negative linear relationship between the number of hours he worked each week, , and the amount of donations in dollars, y, that the organization
collected each week

a. What does it mean for the relationship between the variables when the correlation is weak in this context?

Part of Thor's job at a nonprofit organization, Rag Na Care, is to simply answer the phone to collect donations. The datis collected shows a weak negative linear relationship between the number of hours he worked each week, z. and the amount of donations in dollars, g, that the organization collected each week

b What does it mean for the relationship between the variables when the correlation is negative in this context?

Part of Thor's job at a nonprofit organization, Ray Na Care, is to simply answer the phone to collect donations. The data collected shows a weak negative reasonship between the number of hours he worked each week and the amount of donations in dollars that the organization

codected each week Ther's boss, Nick Fury sees the data and tete hem, "We certainly tend to bring in a less money when you're working here! This graph saves you're the cause of this decrease in donations!

What wrong with the Thor's bom claim? Explain your reasoning "Tell me why"

Answers

a. Thor works more hours each week, the quantity of donations the organization raises each week declines, but the link is not very strong.

What is negative correlation?

When two variables are correlated negatively, the other variable's value falls as the value of the first variable rises.

The correlation coefficent, which expresses correlation on a scale from +1 to -1, is used. Numbers less than 0 indicate a negative connection. An increase in one variable confidently foretells a drop in the other when there is a perfect negative correlation, with a coefficient of -1. Non-zero coefficients between +1 and -1 are used to show lower degrees of connection. 0 means there is no propensity for the variables to change simultaneously, either positively or negatively.

a. A weak negative linear relationship between hours worked and donations collected in this context means that as Thor works more hours each week, the quantity of donations the organization raises each week declines, but the link is not very strong.

b. When we say there is a weak correlation between two variables, we are referring to their level of relationship. The negative correlation in this instance indicates that there is a propensity for the amount of donations collected to decline as the time spent working increases, but the relationship is not very strong, indicating that there is a lot of variability in the data and making firm predictions or conclusions based on this correlation alone is challenging.

c. Tom's boss's claim is wrong as the negative correlation or the decline in donation is a mere coincidence and does not have a relation to Thor's work.

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Part of the proceeds from a garage sale was ​$350 worth of ​$10 and ​$20 bills. If there were more ​$ bills than ​$ ​bills, find the number of each denomination.
Question content area bottom
There were

enter your response here ​$10 bills 20

enter your response here ​$ bills.

Answers

The number of each denomination is: 13 of the $10-dollars bills.

What is the number of the each denomination?

Let x be number of the $20 dollars bills. Then, the number of the $10 dollars bills is (x+2), according to the condition.

The money equation will then be:

20x + 10*(x+2) = 350

Now, solve for x.  

20x + 10x + 20 = 350

30x = 350 -20

30x = 330

x = 330/30

x = 11

So, 11 of the $20 dollars bills and 11 +2 = 13 of the $10-dollars bills.

Full question "Part of the proceeds from a garage sale was ​$350 worth of ​$10 and ​$20 bills. If there were 2 more $10 bills than $20 bills, find the number of each denomination.

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Quadrilateral RSTV is dilated with the origin as the center of dilation using the rule (x,y) (3/2x, 3/2y) to create quadrilateral R'S'T'V'.

Answers

Quadrilateral R'S'T'V' is smaller than Quadrilateral RSTV because a scale factor is less then 1.

What is Translation?

A transformation that occurs when a figure is moved from one location to another location without changing its size or shape is called translation.

Given that;

Quadrilateral RSTV is dilated with the origin as the center of dilation using the rule (x, y) = (3/2x, 3/2y) to create quadrilateral R'S'T'V'.

Here, All the coordinates of vertex of Quadrilateral RSTV are,

R = (- 3, - 2)

S = (- 2, 3)

T = (2, 2)

V = (3, - 1)

Hence, By applying rule we get;

All the coordinates of vertex of Quadrilateral R'S'T'V' are,

R' = (- 3 × 3/2, - 2× 3/2) = (- 9/2. - 3)

S' = (- 2 × 3/2, 3 × 3/2) = (- 3, 9/2)

T' = (2 × 3/2, 2× 3/2) = (3, 3)

V' = (3 × 3/2, - 1 × 3/2) = ( 9/2. - 3/2)

Now, Distance between R and S;

RS = √ (- 3- (- 2))² + (- 2 - 3)²

     = √1 + 25

     = √26

And, Distance between R' and S';

R'S' = √ (- 3- (- 9/2))² + (- 3 - 9/2)²

     = √(3/2)² + (15/2)²

     = √9/4 + 225/4

    = √234/4

Hence, The scale factor is,

⇒ RS / R'S' = √26 / (√234/4)

                  = 2√26/ √234

                  = 2/3

                  = 0.67 < 1

Thus, Quadrilateral R'S'T'V' is smaller than Quadrilateral RSTV because a scale factor is less then 1.

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Hello please help me if you are either in 7th grade or above

Answers

Answer:

The answer is A my friend! Good luck on your test Mr Rush.

(X1,y1) point slope Equation

Answers

The point slope equation with the point (x1, y1) is given as (y - y1) = m (x - x1).

What is point slope equation?

As a line has length but no width, it is a one-dimensional figure in geometry. A line is constructed from a collection of points that can be stretched indefinitely in opposite directions. In a two-dimensional plane, it is determined by two points. In a two-dimensional coordinate plane, there are various ways to express line equations. The general or standard form of the equation of a line, the slope-intercept form, and the point-slope form are the three most often used ways. The point-slope form, as its name implies, combines a line's point with the straight-line slope. The equations of infinite lines with a specified slope can be written, however when we specify that the line passes through a certain point, we obtain a singular straight line.

The point slope equation with the point (x1, y1) is given by the formula:

(y - y1) = m (x - x1)

Here, (x1, y1) are the coordinates of the point on the graph.

m is the slope of the line.

Hence, the point slope equation with the point (x1, y1) is given as (y - y1) = m (x - x1).

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can you please help me ASAP for 50 points SLOPE: FROM TWO POINTS


Answers not related to the question will be REPORTED also pls check answers for posting

Answers

Answer:

Step-by-step explanation:

a) The slope of the line passing through the points (5,6) and (-1,6) can be calculated using the formula:

m = (y2 - y1) / (x2 - x1)

where (x1, y1) = (5,6) and (x2, y2) = (-1,6).

m = (6 - 6) / (-1 - 5) = 0 / -6 = 0

Therefore, the slope of the line is 0.

b) The slope of the line passing through the points (3,-2) and (3,-1) cannot be calculated using the previous formula since the points have the same x coordinate. This means that the line is vertical and therefore its slope is infinite (or undefined).

c) The slope of the line passing through the points (2,2) and (-5,2) can be calculated using the formula:

m = (y2 - y1) / (x2 - x1)

where (x1, y1) = (2,2) and (x2, y2) = (-5,2).

m = (2 - 2) / (-5 - 2) = 0 / -7 = 0

Therefore, the slope of the line is 0.

d) The slope of the line passing through the points (9,-2) and (-7,-2) can be calculated using the formula:

m = (y2 - y1) / (x2 - x1)

where (x1, y1) = (9,-2) and (x2, y2) = (-7,-2).

m = (-2 - (-2)) / (-7 - 9) = 0 / -16 = 0

Therefore, the slope of the line is 0.

e) The slope of the line passing through the points (-8,22) and (1,4) can be calculated using the formula:

m = (y2 - y1) / (x2 - x1)

where (x1, y1) = (-8,22) and (x2, y2) = (1,4).

m = (4 - 22) / (1 - (-8)) = -18 / 9 = -2

Therefore, the slope of the line is -2.

f) Since we know the slope m = 2 and one of the points is (3,6), we can use the formula:

y - y1 = m(x - x1)

where (x1, y1) = (3,6). Substituting m and (x1, y1) into the formula, we get:

y - 6 = 2(x - 3)

Expanding the formula and solving for y, we get:

y = 2x - 6 + 6

y = 2x

Therefore, the y-coordinate of the second point is y = 2(4) = 8. The second point is (4,8).

Angles J and K are vertical angles. Angle J measures 85° and angle K measures
(2x + 5)°. What is the value of x?

Answers

Answer:

x= 45°

Step-by-step explanation:

They are angle on a straight line

85+2x+5 = 180

2x+ 90 = 180

2x = 180-90

2x = 90

dividing both sides of the equation by 2

x = 45

Which rule can be used to describe the x-coordinates in the translation below?.
-5-4-3-2
5
--3-
2
1-
14
2
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3.
4
L5
-A.
B'
B
C'
2 3 4
C
5 X
A

Answers

Answer:

translation point a cross the coordinator

Examine the coordinate grid below. What are the coordinates of the point A’ when point A is reflected across the x-axis?

Answers

Answer:

The rule for reflection along the x axis (x;y) to (x; -y)

A' (x ; -(y) )

A' (4 ; -(5) )

A' (4 ; -5 )

2 A representative sample of 60 students from a high school is surveyed
which elective he or she is taking. The table shows the respons Elective Dance Music Art Photography Electronics Number of Stud 19 7 15 11 8​

Answers

The Accurate Prediction of the data:

In a group of 120 students, it is expected that 16 of them are taking electronics.

About 25% of the students in the school are taking art.

What is Percentage?

To determine the quantity or percentage of something in terms of 100, use the percentage formula. Per cent simply means one in a hundred. With the percentage formula, a number between 0 and 1 can be expressed. A number that is expressed as a fraction of 100 is what it is. It is mostly used to compare and determine ratios and is represented by the symbol %.

Given:

Total students = 60

let x% of students chose Arts

So, x% of 60 = 15

x/ 100 (60) = 15

x = 1500 / 60

x = 25%

and, if there 120 students then number of students choose electronics

= 8/60 x 120

= 16

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Giorgio offers the person who purchases an surpriseunce bottle of Allure two free gifts, chosen from the following: an umbrella, a 1-ounce bottle of Midnight, a feminine shaving kit, a raincoat, or a pair of rain boots. If you purchased Allure, what is the probability you randomly select an umbrella and a shaving kit in that order?


a.
0.00


b.
1.00


c.
0.05


d.
0.20

Answers

Therefore , the solution of the given problem of probability comes out to be the required probability is 0.05 or 1/20 and the correct option is c.

What does the probability technique actually suggest?

Probability theory is an area of mathematics that focuses on calculating the probability that a claim is valid or that a specific event will occur. Chance can be represented by any number between zero and 1, where range 1 is typically used to convey certainty and 0 is frequently used to denote possibility. The probability that a specific event will occur is displayed in a probability diagram.

Here,

The probability of randomly selecting an umbrella and a shaving kit in that order is equal to the probability of selecting an umbrella (with probability 1/5) multiplied by the probability of selecting a shaving kit from the remaining gifts (with probability 1/4,

since one gift has already been chosen and removed from consideration).

Therefore, the probability of selecting an umbrella and a shaving kit in that order is:

=>(1/5) x (1/4) = 1/20 or 0.05

So if you purchased Allure, the probability of randomly selecting an umbrella and a shaving kit in that order as your two free gifts is 1/20 or 0.05.

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four out of twelve people went out of town for the holidays. what percent of the people stayed home for the holidays

Answers

Answer:

66.67

Step-by-step explanation:

8 people stayed home, 8/12=2/3=66.67(approx)

Express $8.99 for 1.24 pounds of salmon as a unit rate. Show your work.

Answers

Answer:

7.25

Step-by-step explanation:

Divide 8.99 by 1.24

Southeast Washington State has a long history of seasonal dust storms. During October 1991 levels were six times greater than the Environmental Protection Agency’s standard. During that year, several researchers conducted studies at three community hospitals to examine the relationship between the amount of dust particles in the air when the storms occur and the number of emergency room visits for respiratory disorders. Using the methods of correlation and regression that you will learn in this module they were able to determine the effect of these dust storms on local residents (Elementary Statistics, fourth edition, Allan Bluman).

For this module you will write a short statistical report based on your linear regression analysis of data collected for two interesting variables that you believe could be linearly correlated. This report should be supported by a scatter plot of the data and a least squares regression line. Here are guidelines for Statistical Report Writing. (Please review the download of the pdf file.)

For your study, you may collect your own data (cite sources!!) or use data that has already been collected. For example, you will find data in the exercises at the end of sections 10.2 and 10.3 of your course text. Use at least 5 pairs of data.

Answers

Southeast Washington State has a long history of seasonal dust storms. In October 1991, levels of dust particles in the air were six times greater than the Environmental Protection Agency's standard.

Several researchers conducted studies at three community hospitals to examine the relationship between the amount of dust particles in the air during the storms and the number of emergency room visits for respiratory disorders. Using the methods of correlation and regression, they were able to determine the effect of these dust storms on local residents.

In this module, you will write a short statistical report based on your linear regression analysis of data collected for two interesting variables that you believe could be linearly correlated. Your report should be supported by a scatter plot of the data and a least squares regression line.

To begin, you should collect your own data or use data that has already been collected. You may find data in the exercises at the end of sections 10.2 and 10.3 of your course text. Use at least 5 pairs of data.

Once you have collected your data, you should create a scatter plot of the data and a least squares regression line. You should also calculate the correlation coefficient and the equation of the regression line.

In your report, you should discuss the relationship between the two variables and the strength of the correlation. You should also discuss the equation of the regression line and how it can be used to make predictions.

Finally, you should conclude your report by discussing the implications of your findings and any limitations of your study.

Overall, your statistical report should be factually accurate, professional, and concise. You should also be sure to cite any sources that you use in your report.

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