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3 years ago

6

Kaitlin bought 6 CDs that were each the same price. Including sales tax, she paid a total of 68.40. Of that total, 4.80 was tax.

What was the price of each CD before tax?

2 answers:

kiruha [24]3 years ago

6 0

Answer:

(68.4-4.8)/6=10.6

cost of one cd=10.6

11111nata11111 [884]3 years ago

5 0

All you had to do is add 68.40 and 4.80 then dived 6

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A study on the population of wolves is being done in a county to determine how the number of wolves has changed over time. The p

mr_godi [17]

Answer:

<h2>The year is 2010.</h2>

Step-by-step explanation:

The population of wolves is given by P(t) = 80(0.98)t.

The study has began in the year of 2000 and will end in 2020.

The difference between 2000 and 2009 is 9 years and the difference between 2009 and 2020 is 11 years.

Hence, the maximum value of t is 11.

The domain is $0 \leq t \leq 11$ .

The population will be 80, that is P(t) = 80.

Hence, 0.98t = 1, or, t = $\frac{1}{0.98} = \frac{100}{98} = \frac{50}{49}$ ≅1.

In (2009 + 1) = 2010, the population of wolves will be 80.

3 0

3 years ago

5 hours 8 min - 3 hours 12 min

belka [17]

Hello,

Here is your answer:

The proper answer is "2.68".

First translate the question:

5 hours and 8 min=5.8

3 hours 12 min=3.12

Now subtract:

5.8-3.12=2.68

Your answer is 2.68!

If you need anymore help feel free to ask me!

Hop this helps!

6 0

3 years ago

What value of x satisfies the equation 5(x – 3) – 2(x + 1) = 4?

hjlf

Answer:

x = 7

Step-by-step explanation:

To solve:

Distribute 5 among everything inside the first parentheses. You'll get 5x - 15.

Next distribute -2 among everything in the second parentheses. You'll get

-2x - 2.

<u>All together: 5x - </u><u>15</u><u> </u><u>-</u><u>2x </u><u>-</u><u> </u><u>2</u><u> </u><u>= 4</u>

Now combine like terms:

5x - 2x = 3x and -15 - 2 = - 17

<u>All</u><u> </u><u>together</u><u>: 3x -</u><u> </u><u>17 = 4</u>

Add 17 on both sides to get 21, and then divide both sides by 3. Answer is x = 7.

________________________________

Last, don't forget to check your work.

You can plug in 7 for x to get:

5(7 - 3) = 20

5 × 7 = 35

5 × -3 = -15

35 - 15 = 20

-2(7 + 1) = -16

-2 × 7 = -14

-2 × 1 = - 2

-14 -2 = -16

<u>20 - 16 = 4</u>

⬆⬆⬆Therefore this is correct.

Sorry this is a bit lengthy, but hope this helps :)

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Allushta [10]

Answer:

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Step-by-step explanation:

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