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2 years ago

Solve the equation for y 9x - 3y = 12

Mathematics

2 answers:

Mekhanik [1.2K]2 years ago

8 0

3y = 9x - 12
y = 3x - 4

i am a mathematics teacher. if anything to ask please pm me

liberstina [14]2 years ago

8 0

I think its 1 for both

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3 years ago

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3 years ago

I need to know the answer to 2 1/3 x 4/5

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Simplify the expression.

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Decimal Form:

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Step-by-step explanation:

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2 years ago

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Solve the system of equations. 10x+y=−20 y=2x2−4x−16 ( , ) and ( , )

Sladkaya [172]

I will go about solving this using the elimination method.

First, convert the equations.

10x + y = -20
4x + y = -12

Second, find the easiest variable to get rid of and get rid of it! (In this case, y) We will subtract to get rid of y.

6x = -8

Third, you want to solve the equation.

6x = -8 (divide by 6)
x = $-1 \frac{1}{3}$

Fourth, solve for y by inserting the answer for x into one of the equations.

10( $-1 \frac{1}{3}$ ) + y = -20
$-13 \frac{1}{3}$ + y = -20 (subtract $-13 \frac{1}{3}$ )
y = $-6 \frac{2}{3}$

The solution for this system of equations is ( $-1 \frac{1}{3}$ , $-6 \frac{2}{3}$ ).

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2 years ago

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