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3 years ago

What is -10=10(x+9) and could you tell me how to do it cause I don't understand.

Mathematics

2 answers:

krek1111 [17]3 years ago

7 0

Answer:

x=-10

Step-by-step explanation:

1. Distribute

2. Subtract the number from both sides of the equation

3. Simplify

4. Divide both sides of the equation by the same term

5. Simplify

6. Solution

=−10

hope this helps!!:)

timofeeve [1]3 years ago

4 0

-10=10x+90
80=10x
x=80/10
x=8

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3 years ago

10x + 4y = 24 6x +12y = 48 What is the value of y? * <br>A. 7 <br>B. 7/2 <br>C. 1 <br>D. -7/2

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Read 2 more answers

Use Cramer's Rule to solve the following system: –2x – 6y = –26 5x + 2y = 13

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$\bf \begin{cases}
-2x-6y&=-26\\
\quad 5x+2y&=13
\end{cases}\stackrel{\textit{determinant of the coefficients}}{D=
\begin{bmatrix}
-2&-6\\5&2
\end{bmatrix}}\implies (-4)-(-30)
\\\\\\
D=-4+30\implies \boxed{D=26}\\\\
-------------------------------\\\\$

$\bf x=\cfrac{D_x}{D}\implies x=\cfrac{
\begin{bmatrix}
\boxed{-26}&-6\\\\ \boxed{13}&2
\end{bmatrix}}{D}\implies x=\cfrac{(-52)-(-78)}{26}
\\\\\\
x=\cfrac{-52+78}{26}\implies x=\cfrac{26}{26}\implies \boxed{x=1}\\\\
-------------------------------\\\\
y=\cfrac{D_y}{D}\implies y=\cfrac{
\begin{bmatrix}
-2&\boxed{-26}\\\\ 5&\boxed{13}
\end{bmatrix}}{D}\implies y=\cfrac{(-26)-(-130)}{26}
\\\\\\
y=\cfrac{-26+130}{26}\implies y=\cfrac{104}{26}\implies \boxed{y=4}$

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4 years ago

What is -10=10(x+9) and could you tell me how to do it cause I don't understand.​

What is -10=10(x+9) and could you tell me how to do it cause I don't understand.