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3 years ago

8x-y= -19 3x + 7y = 15 How do i solve this thank you so much

Mathematics

1 answer:

ki77a [65]3 years ago

5 0

Answer:

Solve for y 3/7=15. 37y=15 3 7 y = 15. Multiply both sides of the equation by 73 7 3. 73.37 y=73.15 7 3. 3 7 y = 7 3. 15

Step-by-step explanation:

Solve for y by simplifying both sides of the equation, then isolating the variable. Y=35

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Lunna [17]

Let's see what to do buddy...

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Step (1)

We know that the sum of the interior angles of any n-sided figure is obtained from the following equation :

$(n - 2) \times 180$

Our figure has 5 sides ;

So , sume the interior angles of it equals :

$(5 - 2) \times 180 = 3 \times 180 = 540 \\$

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Step (2)

First look at the photo which I post.

According it we have :

$(180 - x) + 120 + 85 + (2x - 10) + 90 = 540 \\$

$2x - x + 475 - 10 = 540$

$x + 465 = 540$

Subtract the sides of the equation minus 465 :

$x = 540 - 465$

$x = 75$

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And we're done.

Thanks for watching buddy good luck.

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Ne4ueva [31]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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