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bixtya [17]
3 years ago
8

I need answers for 18 and 19 please

Mathematics
1 answer:
elena55 [62]3 years ago
5 0

Answer:

18-b

19-c

Step-by-step explanation:

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In the expression -12+m-9m+13, name the coefficients​
torisob [31]

Answer:

-12

1

9

13

Step-by-step explanation:

its just the numbers in front of the variables

4 0
3 years ago
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Brandon is pulling a desk to the right with a force of 26.00 N. The force of friction to the left is 3.00 N.
jarptica [38.1K]

Step-by-step explanation:

first and foremost start off with a proper FBD (I drew in the forces and acceleration just to refer back to it quicker, assume right and up are positive)

a) F net = Forces aiding the movement - forces opposing

if the box is sliding to the right then we've got

Fnet = 26 + (-3)

[notice how I wrote that they're both being added because they're vector forces]

Fnet = 23 N

b) using Newton's second law of motion, F = ma, we can find the mass

Fnet = ma

rearrange for mass

M = Fnet/a

M = 23 N / 2.0 ms^-2

M = 11.5 Kg

8 0
4 years ago
Sally buys a coffee table for $300. She refinished it and then sells it for $405. What is the percent increase
andrew-mc [135]

Answer:35%

Step-by-step explanation:

5 0
3 years ago
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A cylinder has a height of 6 inches and a radius of 2 inches. What is its volume? Use a 3.14 and round your answer to the neares
Olenka [21]

Answer:

\boxed {\boxed {\sf 75.36 \ inches^3}}

Step-by-step explanation:

The volume of a cylinder is found using this formula:

v= \pi r^2h

Th height is 6 inches, the radius is 2 inches, and we are using 3.14 for pi. Substitute the values into the formula.

v= (3.14)(2 \ in)^2(6 \ in)

Solve the exponent.

  • (2 in)²= 2 in * 2 in = 4 in²

v= (3.14)( 4 \ in^2)(6 \ in)

Multiply the first two number.

v= 12.56 \ in^2 (6 \ in)

v= 75.36 \ in^3

This is already to the hundredth place, so we do not need to round.

The volume of the cylinder is <u>75.36 cubic inches.</u>

6 0
3 years ago
Can some one help me with this question its hard :( down below ill give brainliest
Inessa05 [86]

Answer:

3 to the 3rd power is the answer because 3x3x3=27

3 0
3 years ago
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