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const2013 [10]
3 years ago
9

The length of a rectangle is 5 in. more than 3 times its width. the area of the rectangle is 50in.2. a quadratic function repres

ents the dimensions of the rectangle. what is the domain of the function?
Mathematics
1 answer:
Goshia [24]3 years ago
6 0
The domain is actually the x value of the function, so we need to find the value of x
suppose the width is x, the length is then 3x+5
the area is 50^2 inches, so x(3x+5)=50 => 3x^2+5x-50=0
Factor this quadratic equation: (x-5)(3x+10)=0 =>x=5 or x=-10/3
width can not be negative, so the width is 5
the domain is x=5
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We want 4/5 of a number to be 144. This means that

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x = \dfrac{144\cdot 5}{4} = 180

4 0
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52 weeks

Step-by-step explanation:

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The same result is shown in the attached graph, which also shows that both clubs' bank balances will be $790 at that time.

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the price of a gallon of unleaded gas was $2.86 yesterday. today, the price fell to $2.79. find the percent decrease. round answ
soldier1979 [14.2K]
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so.. if we take 2.86 as the 100%, how much is 0.07 of that in percentage?

well \bf \begin{array}{ccllll}
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2.86&100\\
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Simplify.
Dafna1 [17]

Answer:

A) 7x^3 + 13x^2 + 8x + 9

Step-by-step explanation:

(3x^2 + 2x + 7x^3) + (10x^2 + 6x + 9)

I like to line them up vertically

7x^3 +3x^2 + 2x

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-----------------------------------

7x^3 +13x^2 +8x +9

4 0
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pishuonlain [190]

Answer:

3/14

Step-by-step explanation:

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