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scoray [572]
3 years ago
10

Pls help for math homework. Show work.

Mathematics
1 answer:
vichka [17]3 years ago
5 0

12x - 13 - x - 9 + 10x

First, get the like terms together

12x + 10x - x -13 -9

Now, combine like terms

12x + 10x - x = 21x

-13 - 9 = -22

Final Answer:

21x - 22

You might be interested in
5/7 × 4/3 ÷ 15/21 =​
kirill115 [55]

Answer:

Your answer is 4/3

Step-by-step explanation:

or 1.3

or 1 1/3 hope this helps

4 0
3 years ago
Read 2 more answers
Multiply each equation by a constant that would help to eliminate the y terms.
goldenfox [79]
6x-15y=-63
-15x+15y=90

This is because you are multiplying the first equation by a constant of 3 and the second equation by 5 so that you can have -15y and +15y which will cancel each other out.
6 0
3 years ago
If a triangular road sign has a center height of
Paladinen [302]

Answer:

Formula

A = 1/2 b * h

Substitute

Area = 60 in^2

b = x

h = 2x - 1

60= 1/2 * x * (2x - 1)

Solve

60 = 1/2 * x (2x - 1) Multiply by 2

60 * 2 = x(2x - 1)

120 = x (2x - 1) Remove the brackets.

120 = 2x^2 - x  Subtract 120 from both sides.

2x^2 -  x - 120 = 0 This factors.

(2x + 15)(x - 8) = 0

Solve for x

2x + 15 = 0

2x = - 15

x = -15/2

x = - 7.5 a negative measurement is useless. Discard this answer.

x - 8 = 0

x = 8

Area (Check)

base = 8

height = 16 - 1 = 15

Area = 1/2 * 8 * 15 = 60 as it should

Answer

Use Area = 1/2 * b * h to find the base and the height.Step-by-step explanation:

3 0
2 years ago
Dose anyone on this app know how to figure this out ?
Nesterboy [21]

Answer:

fuigire what

Step-by-step explanation:

maybe my friend can help

8 0
2 years ago
I NEED THIS DONE IN A FEW MINUTES
MaRussiya [10]

Answer:

1) Word Problem

Sally has $2 and her mother gave her $10 to buy something from the store. Sally spent $7 at the store. How much money does Sally have now?

Expression

(2 + 10) - 7

2) Word Problem

Bob has 5 friends and each of them gave Bob 2 cookies. Bob originally had 2 of his own cookies. After collecting all of the cookies Bob split them evenly among him and his friends. How many cookies does each person have?

Expression

(5 x 2 + 2) ÷ 6

8 0
3 years ago
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