3 years ago

Is -4c>7;c=-2 a solution or inequality

2 answers:

8 0

C = -2 will work as a solution.

We know this because of we substitute -2 into the equation:

-4(-2) > 7

8 > 7

It comes out true, because obviously 8 is greater than 7

Hope this helps :)

Whitepunk [10]3 years ago

7 0

<span>C = -2 will work as a solution.
</span>hope this helps

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Simplify: 7·(a+5)–30 =

postnew [5]

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Step-by-step explanation:

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3 years ago

Axis of symmetry for f(x) = -2x2 + 20x -42

Ksenya-84 [330]

For the function $f(x)=2x^2 +20x-42$

We can use the formula for the axis of symetry, which is $x= \frac{-b}{2a}$

With the values substituted, we get...

$\frac{-20}{2(-2)} =5$

Therefore the axis of symmetry is $x=5$