The first, second and third terms of a geometric progression are the first, fourth and tenth terms, respectively,
of an arithmetic progression. Given that the first term in each progression is 12 and the common ratio of the geometric progression is r, where r # 1, find:
a) the value of r
b) the sixth term of each progression
Answer:
a) r = 2
b)
GP a₆ = 384
AP a₆ = 32
Step-by-step explanation:
First term a₁ = 12 for both progressions
r = common ratio, d = common difference
nth term of geometric progression = a₁ x rⁿ⁻¹
nth term of arithmetic progression = a₁ + (n - 1)d
Second term of GP = Fourth term of AP
=> 12r¹ = 12 + 3d
==> 12r = 12+ 3d (1)
Third term of GP = 10th term of AP
=> 12r² = 12 + 9d (2)
3 x (1) => 3(12r = 12 + 3d) => 36r = 36 + 9d (3)
(2) - (3) gives12r² -36r = 12 - 36
12r² - 36r = 12 + 9d - (36 + 9d)
12r² -36r = -24
12r² -36r + 24 = 0
Dividing by 12 gives
r² - 3r + 2= 0
We can factor r² - 3r + 2 as (r - 1)(r-2)
r² - 3r + 2= 0
=> (r - 1)(r-2) = 0
=> r = 1 or r = 2
r cannot be 1 since all terms of the GP will be equal with a common ratio of 1
Therefore r = 2 (Part a)
Using equation (1) we get:
12r = 12+ 3d
12 x 2 = 12 + 3d
24 = 12 + 3d
3d = 24 - 12 = 12
d = 12/3 = 4
So the common ratio, r, is 2. Common difference d = 4
6th term of GP =12 x r⁵ = 12 x 2⁵ = 12 x 32 = 384
6th term of Ap = 12 + 5d = 12 + 5(4) = 12 + 20 = 32
7-4 skills practice solving logarithmic equations and inequalities
Solve each equation.
1. 3x = log6 216 2. x - 4 = log3 243 3. log4 (4x - 20) = 5
4. log9
(3 - x) = log9 (5x – 15) 5. log81 (x + 20) = log81 (6x) 6. log9 (3x2) = log9 (2x + 1)
7. log4(x - 1) = log4(12) 8. log7(5 - x) = log7 (5) 9. logx (5x) = 2
Solve each inequality.
10. log5 (-3x) < 1 11. log6x > log6 (4 - x)
12. log10 (x - 3) <2 13. log2 (x - 5) > log2 (3)
14. log7 (8x + 5) > log7 (6x - 18) 15. log9 (3x - 3) < 1.5
16. log10 (2x - 2) < log10 (7 - x) 17. log9 (x - 1) > log9 (2x)
18. log16 x ≥ 0.5 19. log3 (−x - 34 + 5) > log3 (x + 2)
20. log5 (3x) < log5 (2x - 1) 21. log3 (7 - x) ≤ log3
(x + 19)
1. 3x = log6 216
3x = 3
x = 1
2. x - 4 = log3 243
x - 4 = 5
x= 9
3. log4 (4x - 20) = 5
4x - 20 = 45
4x = 65
x = 16.25
Describe logarithmic function.A logarithmic function is a type of mathematical function that relates two quantities by the use of logarithms. In particular, a logarithmic function describes the relationship between the input (or independent variable) and the output (or dependent variable) in terms of the logarithm of the input.
The general form of a logarithmic function is:
f(x) = loga(x)
where f(x) is the output, x is the input, and a is the base of the logarithm The logarithm of a number x with respect to a base a is the power to which a must be raised to obtain x. For example, if a is 10, then log10(100) = 2, because[tex]10^2[/tex] = 100.
Logarithmic functions are useful for expressing quantities that vary over a large range of values, such as the brightness of stars or the acidity of solutions. They can also be used to solve exponential equations or to represent data that follows a certain pattern.
In particular, logarithmic functions have the property that they can "undo" exponential functions. That is, if we have an exponential function f(x) =[tex]a^x[/tex], then its inverse function is given by [tex]f^-1(x)[/tex] = loga(x). This property is often used in calculus and other areas of mathematics.
Logarithmic functions can be graphed in a variety of ways, depending on the base and other parameters of the function. The graph of a logarithmic function typically looks like a curve that gets steeper as it moves away from the origin.
In summary, a logarithmic function is a type of mathematical function that relates two quantities by the use of logarithms. They are useful for expressing quantities that vary over a large range of values and can "undo" exponential functions.
1. 3x = log6 216
3x = 3
x = 1
2. x - 4 = log3 243
x - 4 = 5
x= 9
3. log4 (4x - 20) = 5
4x - 20 = 45
4x = 65
x = 16.25
4. log9(3 - x) = log9 (5x – 15)
3 - x = 5x - 15
4x = 18
x = 4.5
5. log81 (x + 20) = log81 (6x)
x + 20 = 6x
5x = 20
x = 4
6. log9[tex](3x^2)[/tex] = log9 (2x + 1)
[tex]3x^2[/tex] = 2x + 1
[tex]3x^2[/tex] - 2x - 1 = 0
(3x + 1)(x - 1) = 0
x = -1/3 or x = 1 (but x = -1/3 doesn't work because it results in a negative argument of the logarithm)
7. log4(x - 1) = log4(12)
x - 1 = 12
x = 13
8. log7(5 - x) = log7 (5)
5 - x = 5
x = 0
9. logx (5x) = 2
5x = [tex]x^2[/tex]
[tex]x^2[/tex] - 5x = 0
x(x - 5) = 0
x = 0 or x = 5 (but x = 0 doesn't work because it results in an undefined logarithm)
10. log5 (-3x) < 1
-3x < 5
x > -5/3
11. log6x > log6 (4 - x)
x > 4 - x
2x > 4
x > 2
12. log10 (x - 3) < 2
x - 3 < 100
x < 103
13. log2 (x - 5) > log2 (3)
x - 5 > 3
x > 8
14. log7 (8x + 5) > log7 (6x - 18)
8x + 5 > 6x - 18
2x > -23
x > -11.5
15. log9 (3x - 3) < 1.5
3x - 3 < 27
x < 10
16. log10 (2x - 2) < log10 (7 - x)
2x - 2 < 7 - x
3x < 9
x < 3
17. log9 (x - 1) > log9 (2x)
x - 1 > 2x
-x > -1
x < 1
18. log16 x ≥ 0.5
x ≥ √16
x ≥ 4
19. log3 (−x - 34 + 5) > log3 (x + 2)
-x - 29 >
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3x - 2y = 4
-5x + 4y = 7
what are the angle measures of the triangle?
The angle measures of the triangle are 45°,45°, and 90°.
What is the angle measure?
When two lines or rays intersect at a single point, an angle is created. The vertex is the term for the shared point. An angle measure in geometry is the length of the angle created by two rays or arms meeting at a common vertex.
Here, we have
Given, the triangle is a right-angle triangle.
And the sides are 7√3, 14√3, 21.
Sides are a multiple of 7.
So, divide each side by 7.
We get the sides √3, 2√3, 3.
In a 45°−45°−90° triangle, the length of the hypotenuse is twice the length of the shorter leg, and the length of the longer leg is √3 times the length of the shorter leg.
Hence, the angle measures of the triangle are 45°, 45° and 90°
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recursive rule for 1, .5, 0, -5,....
The sequence generated recursively by the rule is 1, 0.5, 0, -5, -2.5, 2, 7.25, ...
Describe Recursive Rule?A recursive rule is a mathematical rule that describes how to calculate the value of a term in a sequence or function based on the values of previous terms. In other words, a recursive rule defines a sequence or function in terms of itself.
To apply a recursive rule, we start with one or more initial terms and then use the rule to generate the subsequent terms. The rule involves a formula that expresses each term in the sequence or function as a function of the previous terms. This process continues indefinitely, generating an infinite sequence or function.
Recursive rules are often used in mathematics to define sequences and functions that have a recursive structure, such as the Fibonacci sequence or the factorial function. They can also be used to define algorithms for solving problems in computer science and other areas.
One advantage of recursive rules is that they can provide a concise and elegant way of defining complex sequences or functions. However, they can sometimes be difficult to work with, as they can lead to complicated and recursive formulas that are hard to evaluate or simplify.
To generate the sequence 1, 0.5, 0, -5, ... recursively, we can use the following rule:
a_n = (a_{n-1} - 3a_{n-2})/2
where a_n represents the nth term in the sequence.
Using this rule, we can generate the sequence as follows:
a_1 = 1 (given)
a_2 = 0.5 (given)
To find the next term, we use the recursive rule:
a_3 = (a_2 - 3a_1)/2 = (0.5 - 3(1))/2 = -1
Continuing in the same way, we can find the next terms:
a_4 = (a_3 - 3a_2)/2 = (-1 - 3(0.5))/2 = -2.5
a_5 = (a_4 - 3a_3)/2 = (-2.5 - 3(-1))/2 = 2
and so on. Thus, the sequence generated recursively by the rule is 1, 0.5, 0, -5, -2.5, 2, 7.25, ...
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Consider trapezoid KLMN
. Trapezoid KLMN
is reflected across the x
- and y
-axes to form trapezoid K′L′M′N′.
What is the length of line segment K′N′
?
Responses
3
units
3 units
6
units
6 units
9
units
9 units
12
units
The required length for line segment K'N' is 9 units. So correct option is C.
Describe trapezoid?A trapezoid is a two-dimensional geometric shape that is defined as a quadrilateral with one pair of parallel sides. It is also known as a trapezium in some countries. The other two sides of a trapezoid are typically non-parallel and can be of different lengths.
Trapezoids can be classified into two types: isosceles trapezoids and non-isosceles trapezoids. Isosceles trapezoids have equal lengths of the non-parallel sides, while non-isosceles trapezoids have unequal lengths.
The area of a trapezoid can be calculated using the formula: (base1 + base2) x height / 2, where base1 and base2 are the lengths of the parallel sides, and height is the perpendicular distance between the parallel sides.
The perimeter of a trapezoid can be calculated by adding the lengths of all four sides together. If the trapezoid is isosceles, the perimeter can be calculated using the formula: 2 x (side length) + (sum of the lengths of the parallel sides).
Trapezoids can also be used to solve problems in real-world situations, such as calculating the area of a trapezoidal roof or finding the distance between two parallel lines. They are also commonly used in geometry problems and proofs.
In summary, a trapezoid is a quadrilateral with one pair of parallel sides. It can be classified as isosceles or non-isosceles and can be used to calculate area and perimeter, as well as solve problems in geometry and real-world situations.
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on: 5r-9e + 2 if r = 3 and e = 4
Answer: -19
Step-by-step explanation: 5 x 3 = 15
9 x 4 = 36
15 - 36 = -21
-21 + 2 = -19
I need help with this please
We can see here that determining which polygons are being described below, we have:
1. A parallelogram with congruent sides - rhombus
2. A polygon with equal sides and equal angles - equilateral polygon.
3. A quadrilateral with 1 pair of acute angles and 1 pair of obtuse angles - kite.
4. Can be classified as a parallelogram and a rhombus - rhombus.
What is quadrilateral?A quadrilateral is a geometric shape that has four sides, four vertices (corners), and four angles. The sum of the angles in a quadrilateral is always 360 degrees. Some common examples of quadrilaterals include rectangles, squares, trapezoids, parallelograms, rhombuses, and kites.
5. Can be classified as a quadrilateral and a parallelogram - parallelogram.
6. Has 4 sides, 2 pairs of parallel sides, and 2 sets of congruent sides - rectangle.
7. Has only one set of parallel sides - trapezoid
8. A polygon with 3 equal sides and 3 acute angles - equilateral triangle.
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Ethan works as a server in a restaurant. He gets a `15\%` tip on the cost of every order. What t
The amount of tip that Ethan receives on every order, we can use the formula Tip amount = (Tip percentage) x (Cost of order) and plug in the values accordingly.
To calculate the amount of tip that Ethan receives on every order, we can use the formula:
Tip amount = (Tip percentage) x (Cost of order)
In this case, the tip percentage is `15\%` and the cost of order is the variable we need to find.
Let's assume that the cost of an order is $100. Using the formula above, we can calculate the amount of tip that Ethan receives:
Tip amount = (`15\%`) x ($100)
Tip amount = $15
Therefore, Ethan receives a $15 tip on an order that costs $100.
If the cost of an order is different, we can simply plug in the new value into the formula and calculate the tip amount accordingly. For example, if the cost of an order is $50, the tip amount would be:
Tip amount = (`15\%`) x ($50)
Tip amount = $7.50
In conclusion, to calculate the amount of tip that Ethan receives on every order, we can use the formula Tip amount = (Tip percentage) x (Cost of order) and plug in the values accordingly.
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In January a baby elephant weighs 180kg. By March the weight of the baby elephant had increased by ⅜. Work out the weight of the baby elephant in March
The weight of th baby elephant in the month of March would be 247.5 Kg.
What is weight?Weight of a body is the force exerted by the earth on the body on the surface of the earth towards its center.
Given is that in January a baby elephant weighs 180kg. By March the weight of the baby elephant had increased by ⅜.
Assume the weight of the baby elephant in March would be {x} Kg. We can write -
{x} = 180 + 3/8 of 180
{x} = 180 + 3/8 x 180
{x} = 180 + 67.5
{x} = 247.5 Kg
Therefore, the weight of th baby elephant in the month of March would be 247.5 Kg.
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Please help me ASAP! Thank you! 15 points
Select the equation for this real-world problem: Jorge is taking a trip and bringing his dog, Bruce, along with him. Bruce eats 2 cups of food a day. How many days can he feed Bruce from a 12-cup bags of food?
A. 2d = 12
B. 12 = 2 + d
C. d/2 = 12
D. 12 = d - 2
The correct option is option A: 2d = 12.
I apologize if this is incorrect. I hope you have a lovely day! :)
Answer:
[tex] \sf \: a) \: 2d = 12[/tex]
Step-by-step explanation:
Given information,
→ Jorge is taking a trip with Bruce.
→ Bruce eats 2 cups of food a day.
Now we have to,
→ Find the required equation.
Let us assume that,
→ d = Number of days
The equation will be,
→ 2d = 12
=> As Bruce eats 2 cups in a day.
Then the value of d will be,
→ 2d = 12
→ d = 12 ÷ 2
→ [ d = 6 ]
Hence, option (a) is correct.
Norman is 12 years older than Michael. In 6 years, he will be twice as old as Michael. How old is Michael now?(A) 3(B) 6(C) 12(D) 18(E) 24Spoiler: OA
Answer:
Choice (C) 6
Step-by-step explanation:
We know that Norman is currently 12 years old, and in 6 years he will be twice the age of Michael. Using the two numbers, we can divide 12 by 2 and evaluate.
[tex]\frac{12}{2}=6[/tex]
So Michael is 6 years old.
how to convert 40 g to cup?
40 g is equal to approximately 0.169 cups
To convert grams (g) to cups, you will need to know the density of the substance you are measuring. The density tells you how much of the substance is packed into a certain volume.
Without knowing the density of the substance, it is not possible to make an accurate conversion from grams to cups. However, if we assume that the substance in question has a similar density to water, we can use the following conversion formula:
1 cup = 236.6 g
To convert 40 g to cups, we can use the above formula:
40 g ÷ 236.6 g/cup = 0.169 cups
In summary, to convert grams to cups, you need to know the density of the substance. If the density is unknown, it is best to use an estimated value based on a similar substance. Using the appropriate conversion formula, you can then make an accurate conversion from grams to cups.
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Pleaze help worth 30 points
Answer:
the second one
Step-by-step explanation:
Each number moves up the same amount each time, on the table. For both x and y.
how to convert 0.35 as a fraction?
The value 0.35 as a fraction is 7/20.
In mathematics, fractions are defined as part of a whole. A whole can be an object or a group of objects. In real life, if you cut a pie out of the whole pie, that piece becomes part of the pie. Fractions are words of Latin origin. "Fractus" means "broken" in Latin. In ancient times, rest was expressed in words. Later it was introduced in numerical form.
Fractions are also called parts or sections of any quantity. Represented by the symbol '/'. Bachelor/Bachelor For example, 2/4 is the numerator above and the fraction below the denominator. In this article, you will learn the definition of fractions in mathematics, types of fractions, how to convert fractions to decimals, and many solved examples and full explanations
to convert in fraction we will muliply and devide by 100.
.35*100/100 = 7/20
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What is the additive inverse of the polynomial?
-7y^(2)+x^(2)y-3xy-7x^(2)
The additive inverse of the polynomial is:
7y^(2) - x^(2)y + 3xy + 7x^(2)
What is the additive inverse of the polynomial?The additive inverse of a number A is a number B such that:
A + B = 0
B = -A
Similarly for polynomials, to find the additive inverse, you just need to multiply it by -1.
Here the polynomial is:
-7y^(2) + x^(2)y - 3xy - 7x^(2)
Then the additive inverse is:
-1*(-7y^(2) + x^(2)y - 3xy - 7x^(2))
7y^(2) - x^(2)y + 3xy + 7x^(2)
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[tex]x\sqrt{5} +4x\sqrt{5}[/tex]
From the above question we conclude that when [tex]\sqrt[x]{5} + \sqrt[4x]{5}[/tex] simplifies to
[tex]\sqrt[5x]{5}[/tex].
What is the simplifying expressions involving square roots?
In this case, we combined like terms by adding x√5 and 4x√5, which resulted in (x + 4x)√5 = 5x√5. This involves the distributive property of multiplication over addition, and simplification of expressions involving radicals.
We can simplify the given expression as follows:
[tex]\sqrt[x]{5} + \sqrt[4x]{5}[/tex]
= [tex]\sqrt[(x+4x)]{5}[/tex]
=[tex]\sqrt[5x]{5}[/tex]
Hence, [tex]\sqrt[x]{5} + \sqrt[4x]{5}[/tex] simplifies to [tex]\sqrt[5x]{5}[/tex].
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what is calculator for tan
The tangent (tan) of an angle can be calculated using a calculator. The "tan" button on most scientific or graphing calculators can be used to calculate the tangent of an angle in degrees or radians.
Here's how to utilise a calculator's "tan" function:
The following are some ideas to get you started: (depending on the calculator). Enter the angle in degrees if your calculator is in degree mode. Enter the angle in radians if it is in radian mode.On the calculator, press the "tan" button.The term "calculator" refers to the process of calculating the value of somethingTo get the tangent of 45 degrees, for example, input "45" into the calculator and press the "tan" button. The calculator would then show the tangent value, which is around 1.00.
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Find the solution of the given differential equation satisfying the indicated initial condition.y′=−2,y(0)=−8
The function that satisfies the differential equation y′ = -2 with initial condition y(0) = -8 is y = -2x - 8.
To solve the differential equation y′ = -2 with initial condition y(0) = -8, we need to find the function y(x) that satisfies both the differential equation and the initial condition.
We can start by integrating both sides of the differential equation with respect to x:
∫y′ dx = ∫(-2) dx
y = -2x + C
where C is a constant of integration.
To find the value of C, we can use the initial condition y(0) = -8:
y(0) = -2(0) + C = C = -8
So the solution to the differential equation with initial condition is:
y = -2x - 8
Therefore, the function that satisfies the differential equation y′ = -2 with initial condition y(0) = -8 is y = -2x - 8.
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Thobeka wants to order a book that costs $56,56 the rand to dollar exchange rate is R17,25 to a dollar what is the price of the book in rands
Answer:
Step-by-step explanation:
The book is $56.56.
The rand to dollar exchange rate is R17.25 = $1
To find the price of the book in rands, simply multiply 56.56 x 17.25
= 975.66
The book would be R975.66 in rands.
What is the difference of 8/12 - 1/12
Answer:
7/12
Step-by-step explanation:
What is a fraction?A fraction is a fragment of a whole number, used to define parts of a whole. The whole can be a whole object, or many different objects. The number at the top of the line is called the numerator, whereas the bottom is called the denominator.
An equation you can use to solve for this is:
[tex]\frac{8}{12} -\frac{1}{12} =\frac{7}{12}[/tex]Therefore, the difference of 8/12 - 1/12 is 7/12.
If a cup of water is lighter than a cup of paint, then which is heavier: 100kg of water or 100kg of paint?
Both the 100kg of water and 100kg of paint weigh the same, since they both have a mass of 100kg.
How to determine the heavier substanceFrom the question, we have the following parameters that can be used in our computation:
A cup of water is lighter than a cup of paint
The initial comparison of a cup of water being lighter than a cup of paint cannot be used regarding the weight or mass of 100kg of either substance.
In this case, since both 100kg of water and 100kg of paint have the same mass,
They would also have the same weight if they were located in the same place with the same gravitational force acting upon them.
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Researchers for a company that manufactures batteries want to test the hypothesis that the mean battery life of their new battery is greater than the known mean battery life of their older version. The researchers selected random samples of 32 of the new batteries, subjected the batteries to continuous use, and determined the mean and standard deviation of the battery lives in the sample.
Which of the following is an appropriate test for the researchers’ hypothesis?
a. A one-sample z-test for a population mean
b. A one-sample t-test for a population mean
c. A one-sample z-test for a population proportion
d. A matched-pairs t-test for a mean difference
e. A two-sample t-test for a difference between means
A. A one-sample z-test for a population mean
A one-sample z-test is used to compare the sample mean to a known population mean. In this case, the researchers have a known population mean (the mean battery life of the older version of the battery) and they are trying to determine if the mean battery life of the new battery is greater than that. Therefore, a one-sample z-test is the appropriate test.
The researchers selected random samples of 32 of the new batteries, subjected the batteries to continuous use, and determined the mean and standard deviation of the battery lives in the sample. The one-sample z-test is used to compare the sample mean to a known population mean. The researchers can use this test to determine if the mean battery life of the new battery is b significantly greater than the known mean battery life of their older version. The z-test will calculate the probability of the observed results occurring if the mean battery life of the new battery is actually equal to the known mean battery life of their older version. If the probability is low enough, the researchers can reject the null hypothesis (that the mean battery life of the new battery is equal to the known mean battery life of their older version) and conclude that the mean battery life of the new battery is greater than the known mean battery life of their older version.
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Add.
8/9 + 2/3 + 1/6
Answer: 31/18.
Step-by-step explanation:
To add these fractions, we need to find a common denominator. In this case, the least common multiple of 3, 6, and 9 is 18. We can convert each fraction to an equivalent fraction with a denominator of 18, and then add the numerators:
8/9 + 2/3 + 1/6
= (8/9) * (2/2) + (2/3) * (6/6) + (1/6) * (3/3) (Multiplying each fraction by a form of 1 to obtain a common denominator of 18)
= 16/18 + 12/18 + 3/18 (Simplifying each fraction by multiplying the numerators)
= 31/18 (Adding the simplified numerators)
Therefore, the sum of 8/9, 2/3, and 1/6 is 31/18.
The vertices of a rectangle are at (−4, 2), (3, 2), (3, −2), and (−4, −2).
What is the length of the longer side of the rectangle?
Answer:
7 units
Step-by-step explanation:
You want the length of the longer side of the rectangle defined by the coordinates (−4, 2), (3, 2), (3, −2), and (−4, −2).
Side lengthWhen you plot the points, or simply consider the coordinates, you see the sides of the rectangle are vertical and horizontal line segments.
The length of a vertical segment is the difference of its endpoint y-coordinates:
2 -(-2) = 4
The length of a horizontal segment is the difference of the x-coordinates of its endpoints:
3 -(-4) = 7
The longer side is 7 units long.
Lola’s car can travel no more than 445 miles on one full tank of gasoline. After filling up the tank, she traveled 163 miles in the car. Which inequality represents all possible values of m, the number of miles Lola can travel in the car with the remaining gasoline in the tank?
The inequality that represents all possible values of m, the number of miles Lola can travel in the car with the remaining gasoline in the tank is m ≤ 282.
What is inequality?An inequality in mathematics is a relation that compares two numbers or other mathematical expressions in an unequal way. [1] The majority of the time, size comparisons between two numbers on the number line are made. Several types of inequalities are represented by a variety of notations, including:
The symbol a < b indicates that a is smaller than b.
When a > b is used, it indicates that a is bigger than b.
Let the number of miles = m.
Given that, Lola’s car can travel no more than 445 miles on one full tank of gasoline.
m ≤ 445
After filling up the tank, she traveled 163 miles in the car.
Remaining distance is:
m ≤ 445 - 163
m ≤ 282
Hence, the inequality that represents all possible values of m, the number of miles Lola can travel in the car with the remaining gasoline in the tank is m ≤ 282.
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A box contains 3 red marbles, 6 blue marbles, and 1 white marble. the marbles are selected at random, one at a time, and are not replaced. find each compound probability
The compound probability is P(R and then R) = P(R) x P(R|R) = (3/10) x (2/9) = 0.0667 or 6.67% (rounded to two decimal places)
Describe Probability?Probability is a measure of the likelihood or chance that an event will occur. It is a mathematical concept used to quantify the degree of uncertainty of a particular outcome in a random process.
The probability of an event occurring is expressed as a number between 0 and 1, where 0 indicates that the event is impossible, and 1 indicates that the event is certain to occur. The probability of an event occurring can also be expressed as a percentage, with 0% indicating that the event is impossible and 100% indicating that the event is certain to occur.
The calculation of probability involves determining the number of possible outcomes that satisfy the condition of interest and dividing that number by the total number of possible outcomes in the sample space.
For example, if you toss a fair coin, the probability of getting heads is 0.5 or 50%, since there are two possible outcomes (heads or tails), and each outcome is equally likely. Similarly, if you roll a fair six-sided die, the probability of getting a 4 is 1/6 or approximately 0.167, since there is only one possible outcome of rolling a 4, out of six possible outcomes.
Probability is used in various fields, such as statistics, economics, engineering, and science, to analyze data, make predictions, and make decisions based on uncertain outcomes. It is an essential concept in many areas of study, and its applications are widespread.
Let's denote the events as follows:
R = selecting a red marble
B = selecting a blue marble
W = selecting a white marble
a) The probability of selecting a blue marble on the first draw, followed by a red marble on the second draw:
The probability of selecting a blue marble on the first draw is 6/10 (since there are 6 blue marbles out of a total of 10 marbles). If a blue marble is selected on the first draw, then there are 9 marbles left in the box, including 3 red marbles. The probability of selecting a red marble on the second draw, given that a blue marble was selected on the first draw, is 3/9. Therefore, the compound probability is:
P(B and then R) = P(B) x P(R|B) = (6/10) x (3/9) = 0.2 or 20%
b) The probability of selecting a white marble on the first draw, followed by a blue marble on the second draw, followed by a red marble on the third draw:
The probability of selecting a white marble on the first draw is 1/10. If a white marble is selected on the first draw, then there are 9 marbles left in the box, including 6 blue marbles. The probability of selecting a blue marble on the second draw, given that a white marble was selected on the first draw, is 6/9. If a blue marble is selected on the second draw, then there are 8 marbles left in the box, including 3 red marbles. The probability of selecting a red marble on the third draw, given that a white marble was selected on the first draw and a blue marble was selected on the second draw, is 3/8. Therefore, the compound probability is:
P(W and then B and then R) = P(W) x P(B|W) x P(R|W and B) = (1/10) x (6/9) x (3/8) = 0.025 or 2.5%
c) The probability of selecting a red marble on the first draw, followed by another red marble on the second draw:
The probability of selecting a red marble on the first draw is 3/10. If a red marble is selected on the first draw, then there are 9 marbles left in the box, including 2 red marbles. The probability of selecting another red marble on the second draw, given that a red marble was selected on the first draw, is 2/9. Therefore, the compound probability is:
P(R and then R) = P(R) x P(R|R) = (3/10) x (2/9) = 0.0667 or 6.67% (rounded to two decimal places)
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Does this graph represent a function?
Does the graph represent a function: B. No.
What is a function?In Mathematics, a function can be defined as a mathematical expression which is typically used for defining and representing the relationship that exists between two or more variables such as an ordered pair.
This ultimately implies that, a function is typically used in mathematics for uniquely mapping an input variable to an output variable.
Based on the ordered pairs (-5, 7) and (-2, 7), we can reasonably infer and logically deduce that the relation represented by this graph does not represent a function because the are not uniquely mapped.
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Patrick estimated he would need 45 minutes to get ready for the first day of school, but he only needed 45 minutes. What is the percent error for his estimate?
The percent error for patricks estimate for the first day of school is 25%.
How to find the percentage from the total value?Suppose the value of which a thing is expressed in percentage is "a'
Suppose the percent that considered thing is of "a" is b%
Then since percent shows per 100 (since cent means 100), thus we will first divide the whole part in 100 parts and then we multiply it with b so that we collect b items per 100 items(that is exactly what b per cent means).
We need to Write the percent as a fraction in simplest form
16.24%
So, we can rewrite it as;
16.24 / 100
16 and 24/100 or 16 6/25
So the percent as a fraction is 16 6/25
We are given that;
Time patrick took= 45min
To find the percent error, we first need to find the difference between Patrick's estimate and the actual time it took him to get ready.
Actual time - Estimated time = Error
45 minutes - 45 minutes = 0 minutes
The error is 0 minutes, which means Patrick's estimate was exactly right and there was no error.
However, if we assume that Patrick made a mistake when he estimated and that his actual time is the correct value, then we can find the percent error as follows:
Error = | Actual time - Estimated time | = | 45 minutes - 60 minutes | = 15 minutes
Percent error = (Error / Estimated time) x 100% = (15 minutes / 60 minutes) x 100% = 25%
Therefore, the percentage error will be 25%.
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how to convert millisec to sec
We can convert milliseconds to seconds by using the formula 1 milliseconds = 10⁻³ seconds.
A second is the unit of time. One millisecond is also a unit of time but is it a smaller unit.
We know, Milli is corresponding to 10⁻³.
So, we can write the relation by using the concept of unit conversion.
10⁻³ second = one millisecond.
Now, for example, if we have 2 milliseconds, then it will be equal to 2 x 10⁻³ seconds.
So, now we have to standard formula and we can use it to find the value of the time in milliseconds to second and second to milliseconds.
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