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Zigmanuir [339]
3 years ago
6

Someone help pls......

Mathematics
1 answer:
Maslowich3 years ago
5 0

Answer:

f(- 1) = - 5

Step-by-step explanation:

f( - 1) has x = - 1 in the interval - 5 < x ≤ 0 , thus

f(x) = | - 3x + 2 | - 10 , so

f(- 1) = | - 3(- 1) + 2 | - 10 = | 3 + 2 | - 10 = | 5| - 10 = 5 - 10 = - 5

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Find a solution to the linear equation −2x−2y=8 by filling in the boxes with a valid value of x and y.Provide your answer below:
inna [77]

Given

-2x-2y=8

To find a solution for the linear equation, the first step is to write the equation in slope-intercept form:

-Pass the x-term to the right side of the equation by applying the opposite operation to both sides of the equal sign:

\begin{gathered} -2x+2x-2y=8+2x \\ -2y=2x+8 \end{gathered}

-Divide both sides by -2:

\begin{gathered} \frac{-2y}{-2}=\frac{2x}{-2}+\frac{8}{-2} \\ y=-x-4 \end{gathered}

Once you have expressed the equation of the line in slope-intercept form, replace it with any value for x and calculate the corresponding value of y, for example, x=2

\begin{gathered} y=-(2)-4 \\ y=-2-4 \\ y=-6 \end{gathered}

One solution for the linear equation is x=2 and y=-6, you can check the solution by replacing the values on the original equation, with both values the result should be 8:

\begin{gathered} -2x-2y \\ -2\cdot2-2\cdot(-6) \\ -4+12=8 \end{gathered}

As you can see the values are a valid solution for the linear equation.

So the solution is:

-2(2)-2(-6)=8

6 0
1 year ago
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The difference of a number and thirty-six is seven. Algebraic expression
sleet_krkn [62]

Answer:

x-36=7

Step-by-step explanation:

x-36=7

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Step-by-step explanation:

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Elena L [17]
Plug in 12 for y and rewrite the equation.

12 = 4x + 4

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8 = 4x

Divide by 4 on both sides.

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