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3 years ago

Can someone help out with this question

Mathematics

1 answer:

PilotLPTM [1.2K]3 years ago

6 0

Answer: 15k^2 +82k+112

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Evaluate each expression if m = 3, n = 7, and p = 9

katrin2010 [14]

Answer:

Step-by-step explanation:

First, you would do 7+2 to get 9 and then multiply it by itself to get 81. Next, you divide 81 by 3 to get 27.

4 0

3 years ago

Read 2 more answers

How much surface area would be lost if you glued three 4-cm cubes together to make a rod that is three cubes long and one cube w

Kipish [7]

Answer:

Part 3) $SA=288\ cm^2$

Part 4) $64\ cm^2$

Step-by-step explanation:

Part 3) Calculate the total surface area of three 4 cm cubes

we know that

The surface area of a cube is equal to the area of its six square faces

$SA=6b^2$

The surface area of three cubes is equal to the area of its 18 square faces

$SA=18b^2$

where

b is the length side of the square face

In this problem

$b=4\ cm$

The surface area of three cubes is

$SA=18b^2$

substitute the given value

$SA=18(4)^2$

$SA=288\ cm^2$

Part 4) How much surface area would be lost if you glued three 4-cm cubes together to make a rod that is three cubes long and one cube wide?

In this case the total surface area of the three glued 4-cm cubes is equal to the area of its 14 square faces

The surface area lost is equal to

$18b^2-14b^2=4b^2$

substitute

$4(4)^2=64\ cm^2$

6 0

3 years ago

- 7th Grade work - Pls just say if it's a, b, c, or d.

ehidna [41]

i dont know i just accidentally hit answer sorry

4 0

3 years ago

Read 2 more answers

For parallelogram LMNO, please help?

jeyben [28]

m∠L = 5x - 28
m∠N = 3x - 10

  m∠L ≡ m∠N
5x - 28 = 3x - 10
- 3x - 3x
2x - 28 = -10
+ 28 + 28
2x = 18
2 2
x = 9

m∠L = 5x - 28
m∠L = 5(9) - 28
m∠L = 45 - 28
m∠L = 17

m∠N = 3x - 10
m∠N = 3(9) - 10
m∠N = 27 - 10
m∠N = 17

  x + 17 = 180
- 17 - 17
  x = 163

m∠O = 163

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4 years ago

A.) 15 B.) 45 C.) 60 D.) 30

Cerrena [4.2K]

Look at the picture.
measure of ∠2 is equal 30°

3 0

3 years ago