Tessa's class had a math exam

Answer:

The length of AB is 20 units

Step-by-step explanation:

The equilateral triangle is the triangle that has 3 equal sides and 3 equal angles, the measure of each angle is 60°

∵ All of the angles of triangle ABC measure 60 °

→ By using the fact above

∴ Triangle ABC is an equilateral triangle

→ That means its 3 sides are equal

∴ AB = BC = CA

∵ AB = 3x - 4

∵ BC = 4x - 12

∵ CA = 5x - 20

→ Equate 2 of them to find x

∵ BC = CA

∴ 5x - 20 = 4x - 12

→ Subtract 4x from both sides

∵ 5x - 4x - 20 = 4x - 4x - 12

∴ x - 20 = -12

→ Add 20 to both sides

∴ x - 20 + 20 = -12 + 20

∴ x = 8

→ To find AB substitute the value of x in its expression

∵ AB = 3x - 4

∴ AB = 3(8) - 4

∴ AB = 24 - 4

∴ AB = 20

∴ The length of AB is 20 units

Answer:

The height of the cone-shaped cup is 6 inches and the diameter at the top is 3 inches. ... To find the volume of the cone, you use a formula similar to that of a pyramid, ... \begin{align*}V & = \frac{1}{3} \pi r^2 h \\ V & = \frac{1}{3} (3.14)(5^2 )(7) ... The answer is the volume of the cone is 183.16 cubic inches.

Step-by-step explanation:

i think thats it it was right on gogle

2 = Distributive Property (you are distributing the -5 to the x and the -6)

1 = Given (its the original equation)

3 = Addition Property of Equality (you add 5x to both sides)

4 = Division Property of Equality (you divide both sides by 15)

Answer:

Y=2x has a slope of 2, y=2 has a slope of 0

Step-by-step explanation:

Answer:

the answer to your question is 576 square feet

Step-by-step explanation:

Step 1: 96 ÷ 4 = 24

Step 2: 24×24 =576

Answer:

the surface area of a cylinder:

[tex]A=750\pi[/tex] ft²

or

[tex]A\approx 2356.19[/tex] ft²

Step-by-step explanation:

Given

Using the formula to determine the surface area of a cylinder:

[tex]A=2\pi rh+2\pi r^2[/tex]

[tex]A=2\cdot \pi \cdot 15\cdot 10+2\cdot \pi \cdot 15^2[/tex]

[tex]A=750\pi[/tex] ft²

or

[tex]A\approx 2356.19[/tex] ft²

Thus, the surface area of a cylinder:

[tex]A=750\pi[/tex] ft²

or

[tex]A\approx 2356.19[/tex] ft²

Answer: The answer is D.

Step-by-step explanation:

Multiply the art supplies with their assigned prices, then combine like terms.

Answer

-7

Step-by-step explanation:

opposite of 7

Answer:

i think that you like follow how and what to do

Step-by-step explanation:

Answer:

the answer is E because the shape is still in the same directions, so it wasn't reflected it was just translated

Step-by-step explanation:

Answer:

A. y= -x + 3

Hope this helps!

Answer:

Y

Step-by-step explanation:

the lines dont touch eachother

Answer:

The rate of function is: 5/2                            

Step-by-step explanation:

As we know that the rate of change of a function is a ratio that compares the difference between the output values to the difference between the corresponding input values

rate of change = change in y-values / change in y-values

So, all we need is to find the slope between any two points as the slope is basically termed as the rate of change.

[tex]\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}[/tex]

[tex]\left(x_1,\:y_1\right)=\left(-5,\:18\right),\:\left(x_2,\:y_2\right)=\left(-3,\:23\right)[/tex]

[tex]m=\frac{23-18}{-3-\left(-5\right)}[/tex]

[tex]m=\frac{5}{2}[/tex]

Thus, the rate of function is: 5/2                              

Answer: slope is -1/2 y intercept is (0,2)

Step-by-step explanation: How I Got This Was Using The Slope Formula Y = mx + b to find slope then graphed by using those two points

Answer:

C, D and E

Step-by-step explanation:

Given

Represent solid beads with S and clear beads with C

So:

[tex]S:C = 8:20[/tex]

Required

Select operations that give an equivalent ratio

First, we need to get the unit ratio

[tex]S:C = 8:20[/tex]

Divide through by 4

[tex]S:C = 2:5[/tex] -- This means that, after any operation. The equivalent ratio must be 2: 5

Option A: Add 2 to S and 2 to C

[tex]S:C = 8:20[/tex]

Perform the operation

[tex]S:C = 8 + 2 : 20 + 2[/tex]

[tex]S:C = 10 : 22[/tex]

Divide through by 2

[tex]S:C = 5:11[/tex]

Option B: Subtract 8 from S and 6 from C

[tex]S:C = 8:20[/tex]

Perform the operation

[tex]S:C = 8 - 8 : 20 - 6[/tex]

[tex]S:C = 0 : 14[/tex]

Option C: Multiply S and C by 2

[tex]S:C = 8:20[/tex]

Perform the operation

[tex]S:C = 8*2:20*2[/tex]

[tex]S:C = 16:40[/tex]

Divide through by 8

[tex]S:C = 2:5[/tex]

Option D: Divide S and C by 4

[tex]S:C = 8:20[/tex]

Perform the operation

[tex]S:C = 8/2:20/4[/tex]

[tex]S:C = 2:5[/tex]

Option E: Multiply S and C by 18

[tex]S:C = 8:20[/tex]

Perform the operation

[tex]S:C = 8*18:20*18[/tex]

[tex]S:C = 144:360[/tex]

Divide through by 72

[tex]S:C = 144/72:360/72[/tex]

[tex]S:C = 2:5[/tex]

From the calculations above, options C, D and E gave an equivalent of 2:5.

Answer:

0.41 x < 3.40 < 0.50 x

If there is a whole number of pounds it could be: x = 8 pounds

0.41 * 8 = 3.28,  0.50 * 8 = 4

3.28 < 3.40 < 4

Answer:

Inequality is

0.41 x < 3.40 < 0.50 x

Step-by-step explanation:

Answer:

yes

Step-by-step explanation:

ok thus is a help for help tho

Answer: m= -1/5

Step-by-step explanation:

Find the Slope (4, 2) and (9, 1)

Slope is equal to the change in y over the change in x, or rise over run.

              change in y

     m =    _________

              change in x

The change in x is equal to the difference in x-coordinates (also called run), and the change in y is equal to the difference in y-coordinates (also called rise).        y₂ − y₁

     m =   _____

              x₂ − x₁

Substitute in the values of x and y into the equation to find the slope.

              1 − (2)

     m =   _____

              9 − (4)

Simplify the numerator.

                −1

     m =   _____

              9 − (4)

Simplify the denominator.

                −1

     m =   _____

                 5

Move the negative in front of the fraction.

                −1

     m =   _____

               − 5

Answer:

The slope of the line is [tex]\displaystyle -\frac{1}{5}[/tex].

Step-by-step explanation:

We are given two coordinate points:

We are asked to find the slope of the line.

We can use the rise-over-run formula to solve for the slope of the line.

[tex]\displaystyle \text{slope} = \frac{\text{rise}}{\text{run}}\\\\\text{slope} = \frac{y_2-y_1}{x_2-x_1}[/tex]

However, we firstly need to name our coordinate points.

In math, we can label our coordinates using the following label system:

[tex](x_1, y_1), (x_2, y_2)[/tex]

Therefore, we can also label our coordinates as such:

Now, we can supply these values into the formula and solve for our slope, or a better known variable, m.

[tex]\displaystyle m = \frac{1 - 2}{9 - 4}\\\\m = \frac{-1}{5}\\\\m = -\frac{1}{5}[/tex]

Therefore, our slope is [tex]\displaystyle -\frac{1}{5}[/tex].

Answer:

48.75

Step-by-step explanation:

Answer:

630

Step-by-step explanation:

hope this helps btw can i have brainliest?

Answer:

630

Step-by-step explanation:

Step-by-step on how to solve it is in the image below.

Hope this help! :)

Answer:

A

Step-by-step explanation:

Answer:

i wold say 95% A and 80% C

maybe try A

Step-by-step explanation:

Answer:

its A. B. C. D. E.

Step-by-step explanation:

all of it are correct

Answer:

yes

yes

no

no

no

Step-by-step explanation:

Answer:

10x + 8y - 2

Step-by-step explanation:

[tex]-2(-5x – 4y+1) \\ \\ = ( - 2)( - 5x) - 2 ( - 4y) - 2 \times 1 \\ \\ = 10x + 8y - 2[/tex]

Answer:

52 square units

Step-by-step explanation:

For this you need the length of CB and the length of DA.

|CB| = √(10²+2²) = 2√26

|DA| = √(10²+2²) = 2√26

area of ABC = base · height / 2 = 2√26 · 2√26 / 2 = 52

Answer:

what is the question and what is the graph

Step-by-step explanation:

Answer:

g(1) = 0

Step-by-step explanation:

To evaluate g(1) , substitute x = 1 into g(x), that is

g(1) = 4 - 2(3 - 1)

      = 4 - 2(2)

      = 4 - 4

      = 0

Answer: its 0

Step-by-step explanation:

Answer:

one bag is heavier and the other is lighter.

Step-by-step explanation:

5/8 = more than half a pound

1/4 = less than half a pound

Answer:

3/8

Step-by-step explanation:

You have to make 1/4's denominator match the denominator of 5/8.

By multiplying it by 2.

1/4 =2/8

You then subtract 2/8 into 5/8 to get 3/8