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jek_recluse [69]
3 years ago
13

Hello! Can someone help me with a substitution problem? Pre-Alg level. 3x+9y=42 y=2x

Mathematics
1 answer:
timofeeve [1]3 years ago
6 0

Answer:

x=2

Step-by-step explanation:

The equation becomes 3x+9(2x)=42. Then you distribute the 9 into the 2x. Combine 3x and 18x for 21x=42. Divide 21 by both sides and you get x=2.

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Harry started a new job in 2003. His salary was $31,000. At the beginning of the next year he will receive a raise of $1500. Ass
Anton [14]

Answer:

Step-by-step explanation:

a)

S=31000+1500Y  

Where S is salary and Y is # of years  

b)  

 

Salary in 5 years;  

=31000+1500(5)  

=31000+7500  

=38500  

6 0
3 years ago
Read 2 more answers
If you answer this pls answer the other questions i asked for brainly
vlada-n [284]

Answer:

2 is the answer

Step-by-step2 explanation:

3 0
3 years ago
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The function ƒ(x ) = -3x + 5 is represented by which set of ordered pairs?
ozzi

Answer:

The correct answer is the first set {(-1, 8), (0, 5), (2, -1), (3, -4)}

Step-by-step explanation:

In order to determine if the set works, input each ordered pair to see if the statement ends up true. The first two ordered pairs are done below.

(-1, 8)

f(x) = -3x + 5

8 = -3(-1) + 5

8 = 3 + 5

8 = 8 (TRUE)

(0, 5)

f(x) = -3x + 5

5 = -3(0) + 5

5 = 0 + 5

5 = 5 (TRUE)

6 0
3 years ago
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Pls only answer if yk it ill give correct one BRAINLIEST!!
Dmitry [639]

Answer:

X=10, x=4

Step-by-step explanation:

first, divide 14 by 2, and square it; giving you

x^2-14x+(7)^2=-40

Because 7^2 is 49, you have to add 49 to the other side; giving you

x^2-14x+(7)^2=9

Then factor the left side; giving you (x-7)^2=9

Take the square root of both sides, giving you

(x-7)^2= plus or minus 3

Then solve to get two solutions, 10 and 4

8 0
3 years ago
6x - 4 = 16
Juli2301 [7.4K]

Hello!

Answer:

x=10/3

Step-by-step explanation:

First you want start by adding 4 to both sides

6x-4+4=16+4

6x=20

Then divide 6 to both sides,

6x/6=20/6

x= 10/3

Hope this helps! :)

4 0
2 years ago
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