Pete, Chris, and Dina realized that the number of A’s they each received on their report cards were in a ratio of 4:2:5. If Pete got 14 more A’s than Chris, how many A’s did Dina get?

Answer:

B.

[tex]y = - x + 2[/tex]

Answer:

b. y=-x+2

Step-by-step explanation:

hi!

the slope intercept form is y=mx+b where m is the slope, and b is the y intercept.

since the y intercept is postive 2, we can first eliminate choices A and C since they show a y intercept of negative 2, not positive 2.

next, we can eliminate d since the line of the graph is going downwards, meaning that the slope or m is negative.

Therefore, the correct answer is b.

u can also use a graphing calculator if youre unsure and plug in each equation and see if it matches with the graph.

Answer:

[tex]5[/tex]

Step-by-step explanation:

Let the number be [tex]x[/tex].

[tex]3x+6=5x-4[/tex]

[tex]3x-5x=-4-6[/tex]

[tex]-2x=-10[/tex]

[tex]2x=10[/tex]

[tex]2x/2=10/2[/tex]

[tex]x=5[/tex]

The number is 5.

Answer:

5

Step-by-step explanation:

Answer:

2625

Step-by-step explanation:

First let's see all the possible combinations.

(Even=E, Odd= O)

1) EEEO

2) EEOE

3) EOEE

4) OEEE

5) EEEE

Now let's see what E and O possibly could be

E = 0, 2, 4, 5, 6 and 8 (5)

O = 1, 3, 5, 7, 9 (5)

Now we are just simply gonna multiply

1) EEEO = 4*5*5*5

2) EEOE = 4*5*5*5

3) EOEE = 4*5*5*5

4) OEEE = 5*5*5*5

5) EEEE = 4*5*5*5

The even contains a 0, so you can't put 0 in, so (5-1=4), there are only 4 digits for the even.

500 times 4 = 2000

5⁴ = 625

2000+625= 2625

Answer:

she made electronic calculating machines in order to calibrate rockets and make everything more precise

Step-by-step explanation:

Answer:

D) 10

Step-by-step explanation:

Finding <V:

<V = 180-35 = 145°

Finding x:

In a ║gm, Opposite angle are congruent.

=> 14x+5 = 145

=> 14x = 145-5

=> 14x = 140

Dividing both sides by 14

=> x= 10

Answer:

D

Step-by-step explanation:

10

Answer:

t = 5,-5

Step-by-step explanation:

35/7 = 5

because it is an absolute value, it will always be positive:

-35/7 = -5

Answer:

T = 5,

Step-by-step explanation:

7T = 35

divide 7 by both

T = 5

hope this helps

Answer:

A. 36 degrees

Step-by-step explanation:

180 is for straight lines,

180-79-68

= 36 degrees

Answer:

-6r-2s, or, 2(-3r-s)

Step-by-step explanation:

-4r+s-2r-3s

-4r-2r= -6r

-6r+s-3s= -2s

-6r-2s, or , 2(-3r-s)

Answer:

A sequence is defined as an arrangement of numbers in a particular order. On the other hand a series is defiend as the sum of the elements of a sequence!

Answer:

columns: likes roller coasters, doesn’t like roller coasters;

rows: likes water rides, doesn’t like water rides

Step-by-step explanation:

You want to aks to your friends if they like or not water rides and roller coasters.

In a two-way table, a person goes only in one of the columns and only in one of the rows. Then, the columns would be: like A, doesn't like A; and the rows: like B, doesn't like B. Therefore if 10 people like roller coasters and don’t like water rides:

                                            likes roller coasters       doesn’t like roller coasters

likes water rides          

doesn’t like water rides                  10

Answer:

C

Step-by-step explanation:

BELIVE IT

Answer:

39,182 in expanded form:

Step-by-step explanation:

30,000 + 9,000 + 100 + 80 + 2

Answer:

x - y = -1 ....... 1

3x + 2y = 22 ........ 2

Make x the subject in the first equation

x = -1+y

Substitute this into the second equation

3(-1+y) + 2y = 22

-3 + 3y + 2y = 22

5y = 25

Divide both sides by 5

y = 5

Substitute y = 5 into x = -1+y

x = -1+5

x = 4

x = 4 , y = 5

Hope this helps

Answer: The correct answer is option 4;

A triangular prism. The triangular base has a base of 10 metres and a height of 9 metres. The height of the prism is 8 metres.

Step-by-step explanation: A simple check for the result of each set of dimensions would give the correct answer.

The volume of a right triangular prism is derived as follows;

Volume = 1/2 * b * h * l

Where, b is the base of the triangle, h is the vertical height of the triangle and l is the length of the prism.

Note that the area of the right triangle is denoted by 1/2 * b * h, and multiplying this result by the length of the prism gives the entire depth or volume of the triangular prism. Let us examine the dimensions one after the other;

(1) A triangular prism. The triangular base has a base of 7 metres and height of 9 metres. The height of the prism is 6 metres.

Volume = 1/2 * 7 * 9 * 6

Volume = 189 cubic metres

(2) A triangular prism. The triangular base has a base of 6 metres and height of 13 metres. The height of the prism is 5 metres.

Volume = 1/2 * 6 * 13 * 5

Volume = 165 cubic metres

(3) A triangular prism. The triangular base has a base of 11 metres and a height of 8 metres. The height of the prism is 8 metres.

Volume = 1/2 * 11 * 8 * 8

Volume = 352 cubic metres

(4) A triangular prism. The triangular base has a base of 10 metres and a height of 9 metres. The height of the prism is 8 metres.

Volume = 1/2 * 10 * 9 * 8

Volume = 360 cubic metres

Answer:

2

Step-by-step explanation:

Answer:

A. negative

Step-by-step explanation:

Negative because no x-intercepts, that means no real solutions.

The discriminant of the function is a negative option (A) negative is correct.

Any equation of the form [tex]\rm ax^2+bx+c=0[/tex] where x is variable and a, b, and c are any real numbers where a ≠ 0 is called a quadratic equation.

As we know, the formula for the roots of the quadratic equation is given by:

[tex]\rm x = \dfrac{-b \pm\sqrt{b^2-4ac}}{2a}[/tex]

We have a graph of a quadratic equation shown in the picture.

The graph of a quadratic equation is a parabola (It is defined as the graph of a quadratic function that has something bowl-shaped)

As we know the discriminant formula is:

D = b² - 4ac

The above formula is used to find the nature of the roots.

If D = 0 then there will only be one intersection at the x-axis.

If D > 0 then there will be two intersections at the x-axis.

If D < 0 then there will no intersection at the x-axis.

From the graph, there is no x-intersection which means:

D < 0 or

D is negative.

Thus, the discriminant of the function is a negative option (A) negative is correct.

Learn more about quadratic equations here:

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Answer:

[tex]\frac{dy}{dx}[/tex] = [tex]\frac{1-y}{1+x}[/tex]

Step-by-step explanation:

Differentiate xy using the product rule, then

Given

x - y = xy

1 - [tex]\frac{dy}{dx}[/tex] = x. [tex]\frac{dy}{dx}[/tex] + y. 1 = x[tex]\frac{dy}{dx}[/tex] + y ( subtract 1 from both sides )

- [tex]\frac{dy}{dx}[/tex] = x [tex]\frac{dy}{dx}[/tex] + y - 1 ( subtract x [tex]\frac{dy}{dx}[/tex] from both sides )

- [tex]\frac{dy}{dx}[/tex] - x [tex]\frac{dy}{dx}[/tex] = y - 1 ( multiply through by - 1 )

[tex]\frac{dy}{dx}[/tex] + x[tex]\frac{dy}{dx}[/tex] = 1 - y

[tex]\frac{dy}{dx}[/tex] (1 + x) = 1 - y ← divide both sides by (1 + x)

[tex]\frac{dy}{dx}[/tex] = [tex]\frac{1-y}{1+x}[/tex]

The differentiation of the function x - y = xy is dy/dx = (1-y)/(x+1).

Differentiation is a method of finding the derivative of a function.

It shows instantaneous rate of change in a function.

The given expression is,

x - y = xy

Differentiate with respect to x,

d/dx (x-y) = d/dx (xy)

Use multiplication formula for differentiation,

d/dx(ab)= a.db/dx+da/dx.b,

1 - dy/dx =  x.dy/dx + y. 1

1 - dy/dx = x.dy/dx + y

1 - y =x.dy/dx + dy/dx

1 - y = (x+1).dy/dx

dy/dx = (1-y)/(x+1)

The differentiation of the function x - y = xy is dy/dx = (1-y)/(x+1).

To learn more about Differentiation on:

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Answer:

25°, 25°, 155° and 155°

Step-by-step explanation:

Let's call the four angles a, b, c and d.

These angles are supplementary and vertically opposite in pairs, so we have:

[tex]a = c[/tex]

[tex]b = d[/tex]

[tex]a + b = 180\°[/tex]

[tex]c + d = 180\°[/tex]

If the sum of two of these angles is 50°, these angles need to be the vertically opposite ones (a and c or b and d). So we have that:

[tex]a + c = 50\°[/tex]

Substituting 'c' for 'a', we have:

[tex]2a = 50[/tex]

[tex]a = 25\°[/tex]

Now we can find the value of the three other angles:

[tex]c = a = 25\°[/tex]

[tex]b = 180 - a = 155\°[/tex]

[tex]d = 180 - c = 155\°[/tex]

Answer:

-80

Step-by-step explanation:

Solve for x for the x value.

Answer:

120 different ways

Step-by-step explanation:

5*4*3*2*1 = 120 different ways!

Answer:idk

Step-by-step explanation:

Idk

Answer:

Step-by-step explanation:

Look for key words, phrases, and numbers.

they both mean multiplying by two, or x2

That means the volume of the cylinder is multiplied by factor of 2.

Answer:

18

Step-by-step explanation:

The cylinder's original volume is [tex]$\pi r^2h$[/tex]. The new height is 2h and the new radius is [tex]$r+\frac{200}{100}r=3r$[/tex]. That means the new volume is [tex]$\pi (3r)^2(2h)=\pi r^2h(9)(2)$[/tex]. The new volume is the original volume multiplied by a factor of [tex]$\boxed{18}$[/tex].

Mark me as brainliest plz and hope this halped u!

Answer:

[tex]1.\ 12\ feet = 4\ yards[/tex]

[tex]2.\ 4\ miles = 21120\ feet[/tex]

Step-by-step explanation:

Given

12 feet = _____ yard

4 miles = ____ feet

To start with;

we need to understand the unit of conversion between the two measurements;

1. 12 feet = _____ yard

To convert from feet to yard;

[tex]1\ foot = \frac{1}{3} yard[/tex]

This implies that;

[tex]12\ feet = 12 * \frac{1}{3} yard[/tex]

[tex]12\ feet = \frac{12}{3} yard[/tex]

[tex]12\ feet = 4\ yards[/tex]

2. 4 miles = ____ feet

To convert from miles to feet;

[tex]1\ mile = 5280\ feet[/tex]

This implies that;

[tex]4\ miles = 4 * 5280 feet[/tex]

[tex]4\ miles = 21120\ feet[/tex]

Answer:

Step-by-step explanation:

Lets find the third angle of the isosceles triangle that has an measure of 29 for one of the angles

Lets use the angle sum theorem and isosceles triangle definition

180=n+29+29

180=n+58

n+58=180

n=180-58

n=122

This angle is supplementary to one of the two congruent angles of the triangle that contains angle x

180=y+122

y+122=180

y=180-122

y=58

The triangle that has angle x is isosceles, thus we can use the following equation to find x

180=58+58+x

180=116+x

116+x=180

x+116=180

x=180-116

x=64 degrees

Answer:

The weather at 5 pm is -7 degrees Celsius. Every hour, the temperature drops 8 degrees. How much time has gone by when the temperature is -47 degrees?

Step-by-step explanation:

The equation can be rearranged to get:

-7-8f=-47

Example: The weather at 5 pm is -7 degrees Celsius. Every hour, the temperature drops 8 degrees. How much time has gone by when the temperature is -47 degrees?

Answer:

Step-by-step explanation: negative eight f minus seven equals negative fourty-seven .  answer: 5

Answer:

-15/41

Step-by-step explanation:

Answer:

-15/41

Step-by-step explanation:

We can use the slope formula since we have 2 points

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

    = (24 - -6)/(11 - 93)

   = (24+6)/ (-82)

   = 30/ -82

   -15/41

Answer: Kilometers to meter

Step-by-step explanation: 1 km is equal to 1000km. Eg:Similarly 2 Kilometers is 2×1000 which gives 2000m.

Hope its clear. Also you multiply only when you are converting a higher form to a lower form. Here km to m

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Answer:

it is c

Step-by-step explanation:

Answer:

2.54 x 60 = h

h = 152.4

Step-by-step explanation:

5 feet is equal to 152.4 centimeters. Below is an explanation I found on the web explaining this:

To calculate 5 Feet to the corresponding value in Centimeters, multiply the quantity in Feet by 30.48 (the conversion factor). In this case, we should multiply 5 Feet by 30.48 to get the equivalent result in Centimeters:

5 Feet x 30.48 = 152.4 Centimeters

Thus, 5 feet is equivalent to 152.4 centimeters.

Now, assuming this part has been understood, we can move on. I see variables are being used to represent factors here. As stated, h represents Tonya's height in centimeters.

So, knowing the equivalent amount of centimeters in 5 feet we can answer this easily. 1 inch equals 2.54 centimeters according to this problem.

152.4 ÷ 2.54 = 60.

2.54 can go into 152.4 60 times.

2.54 x 60 = h

h = 152.4 aka Tonya's height in centimeters.

Hope this helps!

Answer:

12 and 6

Step-by-step explanation:

12 times 6 is 72

the 12 is twice 12 which means that 6 and 12 is the answer

hope this helps

Answer:

6 and 12

Step-by-step explanation:

let one of the positive integers be replaced with X.

since the other intiger is twice the first one

The two integers will be x and 2x therefore since the product is equal to 72

X* 2X= 72

2X² = 72

X² = 36

X. = 6

2X = 12

Answer:

120

Step-by-step explanation:

To solve this question we would be using combination formula.

The formula for combination is given as:

C(n, r) = nCr

nCr = n!/r! ×(n - r)!

In the above question,

n = 10 men

r = 3 operators

Hence,

nCr = n!/r! × (n - r)!

10C3 = 10! /3! × (10 - 3)!

10C3 = 10!/3! × 7!

10C3 = 10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1 /(3 × 2× 1 ) ×(7 × 6 × 5 × 4 × 3 × 2 × 1)

10C3 = 10 × 9 × 8 / 3 × 2× 1

10C3 = 720/6

10C3 = 120

Therefore, the number of groups of 3 operators that are possible is 120.