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Colt1911 [192]
2 years ago
15

3x+5y= -9 Y= 2x-7 Use substitution to solve the system

Mathematics
1 answer:
Helen [10]2 years ago
4 0

Answer:

x = 2

Step-by-step explanation:

3x + 5y = -9 ___(1)

y = 2x - 7

Substituting y's value in (1) ..

3x + 5( 2x - 7) = -9

3x + 10x -35 = -9

13x = -9 + 35

13x = 26

x = 26/13

<u>x = 2</u>

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Can 8/45 be simplified as a fraction
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Answer:

Step-by-step explanation:

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3 years ago
Identify the property that the statement illustrates
oksian1 [2.3K]

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3 years ago
If x varies directly with y and x=6 when y=8, find x when y=18.
andrey2020 [161]

Answer:

x = 13.5

Step-by-step explanation:

direct variation

y = kx

substitute x and y to find k

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6 0
3 years ago
I think it’s 393.75 But not Sure can anyone confirm ? Or share the right answer
Naya [18.7K]

Answer:

$415.63

Step-by-step explanation:

it would have been 393.75, but he worked 5 hours overtime and got paid time and a half for it, meaning his normal pay plus half of it. (only for overtime tho).

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40 × 8.75 = 350

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5 0
3 years ago
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