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g100num [7]
3 years ago
8

A tennis racquet with an original price of $30 is on sale for $21. What is the percent of discount?

Mathematics
1 answer:
sleet_krkn [62]3 years ago
6 0

Answer:

30%

Step-by-step explanation:

9=30x solve for x to get .30

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Tracy recieves payments of $X at the end of each year for n years. The present value of her annuity is 493. Gary receives paymen
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Answer:

v = 1/(1+i)

PV(T) = x(v + v^2 + ... + v^n) = x(1 - v^n)/i = 493

PV(G) = 3x[v + v^2 + ... + v^(2n)] = 3x[1 - v^(2n)]/i = 2748

PV(G)/PV(T) = 2748/493

{3x[1 - v^(2n)]/i}/{x(1 - v^n)/i} = 2748/493

3[1-v^(2n)]/(1-v^n) = 2748/493

Since v^(2n) = (v^n)^2 then 1 - v^(2n) = (1 - v^n)(1 + v^n)

3(1 + v^n) = 2748/493

1 + v^n = 2748/1479

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Step-by-step explanation:

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The formula below gives the sum of the degrees, S, of the interior angles of a polygon. If n represents the number of sides, whi
Helga [31]

Answer:

The equation representing the value of <em>n</em> is, n=\frac{S}{180^{\text{o}}}+2.

Step-by-step explanation:

The formula to compute the sum of the degrees, S, of the interior angles of a polygon is:

S=(n-2)\times 180^{\text{o}}

Compute the equation of <em>n</em> as follows:

   S=(n-2)\times 180^{\text{o}}

\frac{S}{180^{\text{o}}}=(n-2)

   n=\frac{S}{180^{\text{o}}}+2

Thus, the equation representing the value of <em>n</em> is, n=\frac{S}{180^{\text{o}}}+2.

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Max is painting a fence.The table shows the number of square feet he painted after various numbers of minutes. What is the rate
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Step-by-step explanation:

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Answer:

A

Step-by-step explanation:

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so A

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c

Step-by-step explanation:

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