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nadezda [96]
3 years ago
15

Pls helppp :))

Mathematics
1 answer:
kirza4 [7]3 years ago
4 0

Answer:

x=3,-7

Step-by-step explanation:

We can solve for x by using \frac{-b\pm\sqrt{b^{2} -4ac} }{2a}

By applying this on the quadratic equation, we get:

x=\frac{-4\pm\sqrt{4^{2}+84} }{2}

Which simplifies to:

x=\frac{-4\pm10}{2}

\therefore x=3,-7

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Answer:

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A car dealership has 24ft of dividers with which to enclose a rectangular play sace
alina1380 [7]

Answer:

A)  Area = A(x) = 24x - x^2

B)  Domain = {x < 24}

Step-by-step explanation:

<u>Complete Question:</u>

A car dealership has 24ft of dividers with which to enclose a rectangular play space in a corner of a customer lounge. The sides against the wall require no partition. Suppose the play space is x feet long.  

A) express the area of the play space as a function of x

B) find the domain of the function

Solution:

A)

The rectangle has area of length * width

length is x

so width will be 24 - x

Hence, the area will be:

Area = x(24 - x)

Area = A(x) = 24x - x^2

B)

Domain is the set of x values that make the function defined.

The domain will be all values less than 24.

Because if you take 24, the area would be 0 [doesn't make sense]

if you take anything over 24, the area would be negative [not possible]

Hence, the domain is:

Domain = {x < 24}

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Step-by-step explanation:

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