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sasho [114]
2 years ago
12

What is the solution to -6 + 5(1-x) = - 13 – 7 x?

Mathematics
2 answers:
Ludmilka [50]2 years ago
8 0

Answer:

x=-6

Step-by-step explanation:

-6+5(1-x)=-13-7x

1) Using the distributive property distribute the 5 to the equation in the parenthesis

-6+5-5x=-13-7x

2) Combine the -6 and 5

-1-5x=-13-7x

3) Add 1 to both sides.

-1(+1)-5x=-13(+1)-7x

-5x=-12-7x

4) Add 7x to both sides

-5x(+7x)=-12-7x(+7x)\\ 2x=-12

5) Divide both sides by 2 to isolate the x.

\frac{2x}{2} =\frac{-12}{2}\\  x=-6

garik1379 [7]2 years ago
7 0
Sorry this so sloppy, hope this helps!!

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MA_775_DIABLO [31]

Answer:

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Step-by-step explanation:

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The "differences" of a function are related to the average slope between adjacent points. Second differences are related to the rate of change of the slope of the function. When <em>second differences are negative</em>, as here, the slope of the quadratic function is decreasing, becoming more negative. We say the <em>curvature</em> of the function is <em>negatve</em>, and that it <em>opens downward</em>.

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<h3>a, b.</h3>

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<h3>c.</h3>

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<em>Additional comment</em>

The attachment shows a table with three evenly-spaced points on the curve. The calculations show first differences (d1) and second differences (d2). You can see that the sign of the second diffference is negative, in agreement with the given conditions.

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