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oksano4ka [1.4K]
3 years ago
12

Consider the equation x^2 + 12x + c = 0. If c = -28, list the steps to solve the equation by completing the square, and give the

solution or solutions.
Mathematics
1 answer:
nlexa [21]3 years ago
8 0
X^2+12x-28
(x-2)(x+14)

Solve for x
x-2=0
x=2

x+14=0
x=-14
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Answer:

The piecewise functions accurately represents charges  based on Ben's cell phone plan is :

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Step-by-step explanation:

Let x be the minutes over cell phone

Let f(x) represents the piecewise function that represents the charges based on Ben's cell phone plan.

We are given that Ben has a cell phone plan that provides 200 free minutes each month for a  flat rate of $39.

So,f(x)= 39, x \leq 200

We are also given that  For any minutes over 200, Ben is charged $0.35 per minute.

So, Minutes over 200 = x-200

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Hence the piecewise functions accurately represents charges  based on Ben's cell phone plan is :

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Step-by-step explanation:

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GenaCL600 [577]

Answer:

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Step-by-step explanation:

The easiest related equation to get is simply solving for x:

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Isolate the variable, x. Note the equal sign, what you do to one side, you do to the other. Subtract 5 from both sides:

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Isolate the variable, x. Divide 66 from both sides of the equation:

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~

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