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3 years ago

10

Stephanie just redecorated her bedroom. She wants to paint her door green but needs to know the surface area of the door to see

if she has enough paint.
What is the surface area of the door?

1 answer:

Alona [7]3 years ago

3 0

Answer:The surface area of the door is 33,680

Step-by-step explanation:

The answer is correct.

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Mary spent half of her allowance going to the movies. She washed the family car and earned seven dollars. What is her weekly all

Nata [24]

Answer:If Mary spent half of her allowance the equation will begin with 1/2x or 0.5x where x is her allowance and 0.5 is half of her allowance spent. Mary also earned 7 dollars by washing the car so this will be added to her allowance spent.

The problem says that after Mary has spent half of her allowance at the movies she was left with 18 dollars so that means that the equation must be equal to 18.

The equation you want to set up is

0.5x+7=18

Where, 18-7=11

0.5x=11

11/.5 = x

x = $22

Thus, Mary has a weekly allowance of 22 dollars.

Step-by-step explanation:

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3 years ago

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Which value of c will make the equation true?

sweet-ann [11.9K]

Answer:

A

Step-by-step explanation:

44 - 15 =29

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3 years ago

Which of the following functions gives the length of the base edge, a(v), of a right square pyramid that is 8 inches tall as a f

Reil [10]

Answer:

$\large\boxed{a(V)=\sqrt{\dfrac{3V}{8}}}$

Step-by-step explanation:

The formula of a volume of a square pyramid:

$V=\dfrac{1}{3}a^2h$

a - base edge

h - height of a pyramid

We have H = 8in.

Substitute and solve for a:

$\dfrac{1}{3}a^2(8)=V\\\\\dfrac{8}{3}a^2=V\qquad\text{multiply both sides by}\ \dfrac{3}{8}\\\\\dfrac{3\!\!\!\!\diagup^1}{8\!\!\!\!\diagup_1}\cdot\dfrac{8\!\!\!\!\diagup^1}{3\!\!\!\!\diagup_1}a^2=\dfrac{3}{8}V\\\\a^2=\dfrac{3V}{8}\Rightarrow a=\sqrt{\dfrac{3V}{8}}$

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3 years ago

Darius had 1/2 an inch of hair cut off. Anna had 3/4 an inch of hair cut off. Penelope had 5/8 an inch of hair cut off. Who had

Anestetic [448]

I don’t know I just need points

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2 years ago

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Find the percent increase. Round to the nearest percent.

kakasveta [241]

Answer:

80%

Step-by-step explanation:

from $25 to $45

$45/$25 = 1.8

$25 x 1.8 = $45

therefore, the increase is 80%

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3 years ago