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3 years ago

Зу - 2(5y - 7) = -9y + 6

Mathematics

1 answer:

Iteru [2.4K]3 years ago

4 0

Answer:

y = -4

Step-by-step explanation:

3y - 2(5y - 7) = -9y + 6 (Given)

3y - 10y + 14 = -9y + 6 (Distribute)

-7y + 14 = -9y + 6 (Add like terms)

2y + 14 = 6 (Add 9y on both sides)

2y = -8 (Subtract 14 on both sides)

y = -4 (Divide 2 on both sides)

You can check by substituting the solution for y:

3(-4) - 2(5(-4) - 7) = -9(-4) + 6

-12 - 2(-20 - 7) = 36 + 6

-12 - 2(-27) = 42

-12 + 54 = 42

42 = 42

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3 years ago

What is 9-3 Divided by 1/3 + 1?

Eddi Din [679]

Answer:

9/2

Step-by-step explanation:

9-3=6 and (1/3+1)=4/3

The answer is 6/(4/3)=9/2

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2 years ago

LM has endpoints L(-1 1) and M(-5 -3) find the coordinates of the midpoint of LM

qaws [65]

$\bf \textit{middle point of 2 points }\\ \quad \\
\begin{array}{lllll}
&x_1&y_1&x_2&y_2\\
% (a,b)
L&({{ -1}}\quad ,&{{ 1}})\quad 
% (c,d)
M&({{ -5}}\quad ,&{{ -3}})
\end{array}\qquad
% coordinates of midpoint 
\left(\cfrac{{{ x_2}} + {{ x_1}}}{2}\quad ,\quad \cfrac{{{ y_2}} + {{ y_1}}}{2} \right)
\\\\\\
LM=\left(\cfrac{{{ -5}} -1}{2}\quad ,\quad \cfrac{-3+1}{2} \right)$

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3 years ago

Read 2 more answers

125m-75m+43,875=45,450-175m

Nataly [62]

125m-75m+43,875=45,450-175m

We simplify the equation to the form, which is simple to understand
125m-75m+43,875=45,450-175m

We move all terms containing m to the left and all other terms to the right.
+125m-75m+175m=+45.45-43.875

We simplify left and right side of the equation.
+225m=+1.575

We divide both sides of the equation by 225 to get m.
m=0.007

(I’m sorry if I’m wrong I tried)

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3 years ago

Mandy and five of her friends bought a package of bottled water for $4.98. How much will each friend pay to the nearest cent, if

eduard

Each friend will have to pay rounded to the nearest thousandth 0.996 so each friend will pay about .99 cents.

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3 years ago

Зу - 2(5y - 7) = -9y + 6​

Зу - 2(5y - 7) = -9y + 6