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3 years ago

How much do you save if you get 25% off a $30 book

Mathematics

2 answers:

erica [24]3 years ago

7 0

Answer:

$7.50

Step-by-step explanation:

Thus, a product that normally costs $30 with a 25 percent discount will cost you $22.50, and you saved $7.50. You can also calculate how much you save by simply moving the period in 25.00 percent two spaces to the left, and then multiply the result by $30 as follows: $30 x .25 = $7.50 savings.

Sliva [168]3 years ago

5 0

Answer:

$7.50

Step-by-step explanation:

30/4 = $7.50

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Gelneren [198K]

<h3>Answer: Choice (a) $1,653.66</h3>

=====================================================

Work Shown:

Use the compound interest formula

A = P*(1+r/n)^(n*t)

A = 10000(1+0.039/1)^(1*4)

A = 11,653.65589441

A = 11,653.66

That's the amount of money Tammy will have at the end of 4 years.

Subtract off the principal from this value to get the interest.

interest = A - P

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7 0

3 years ago

The manager of a music store has kept records of

Marysya12 [62]

Answer:

(a) $P(x\le 3) = 0.75$

(b) $P(x\le 3) = 0.75$

(d) $P(x = 1\ or\ 2) = 0.55$

(e) $P(x > 2) = 0.45$

Step-by-step explanation:

Given

$\begin{array}{ccccccc}{CDs} & {1} & {2} & {3} & {4} & {5} & {6\ or\ more}\ \\ {Prob} & {0.30} & {0.25} & {0.20} & {0.15} & {0.05} & {0.05}\ \ \end{array}$