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Marianna [84]
3 years ago
5

10. 10x + 5y = 15 y=2x-3

Mathematics
1 answer:
Ivan3 years ago
6 0

Answer:

(i think) 1.5

Step-by-step explanation:

If you replace y with the equation y=2x-3, you get 5(2x - 3)

if you distribute this, it equals 10x - 15

combining like terms 10x + 10x - 15=15 will turn into 20x - 15 = 15

if you add 15 to both sides, -15 will cancel and 15 will turn into 30

20x = 30

divide both sides by 20 which will lead to x=1.5

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g(20) = 19.6 + 1.74 (20)

g(20) = 19.6 + 34.8

g(20) = 54.4

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3 years ago
What is the answer to this equation? 2(9+x) = -5(4-x)
photoshop1234 [79]

Answer:

Hi!

Alrighty here we go:

2(9+x)=-5(4-x)

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Now combine like terms

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Hope this helped!

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