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kirill [66]
3 years ago
6

Please help with this question

Mathematics
1 answer:
posledela3 years ago
6 0

Answer:

The maximum revenue will be R=\$25,000 at price p=\$100.

Step-by-step explanation:

Given:

R=-2.5p^2+500p

Find the vertex of the parabola represented by given equation:

p_v=\dfrac{-b}{2a}=\dfrac{-500}{2\cdot (-2.5)}=\dfrac{500}{5}=100

When p=\$100, then

R=-2.5\cdot 100^2+500\cdot 100=-2.5\cdot 10,000+50,000=-25,000+50,000=25,000

The maximum revenue will be R=\$25,000 at price p=\$100.

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Gabrielle's age is two times Mikhail's age. The sum of their ages is 81. What is Mikhail's age?
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Answer:

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Step-by-step explanation:

       Let <em>g </em>be Gabrielle's age and <em>m </em>be Mikhail's age.

       We can turn the statements the problem gives us into mathematical expressions to help us solve.

       Gabrielle's age is two times Mikhail's age:

                      <em>g </em>= 2<em>m</em>

       The sum of their ages is 81:

                      <em>g </em>+ <em>m </em>= 81

       This gives us a system of equations that will allow us to solve for Gabrielle's age.

<em>g </em>+ <em>m </em>= 81

(2<em>m</em>)<em> </em>+ <em>m </em>= 81

3<em>m </em>= 81

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       If we need to solve for Gabrielle's age, we can do the following.

<em>g </em>= 2<em>m</em>

2(27)<em> </em>= <em>g</em>

54 = <em>g</em>

g = 54

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Gabrielle's age is 54.

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