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lesya [120]
3 years ago
8

The CD cost $16.50 before tax what is the total cost after a 7% sales tax is added

Mathematics
1 answer:
Black_prince [1.1K]3 years ago
8 0

Answer: 17.65

Step-by-step explanation:

You turn 7% into a decimal or 0.07 then you multiply it by 16.50 you get 1.15 then you add it then you get 17.65.

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Solve in(5x+7)=8 round to the nearest thousandth
Ivan

Answer:

x=\frac{1}{5}

x=0.2

Step-by-step explanation:

(5x+7)=8

5x+7=8

Subtract 7 from both sides.

5x+7-7=8-7

Simplify.

5x=1

Divide both sides by 5.

\frac{5x}{5} =\frac{1}{5}

Simplify.

x=\frac{1}{5}

Decimal form:

0.2

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3 years ago
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An angle measures 16° more than the measure of its supplementary angle. What is the measure of each angle?
Olenka [21]
82 degrees and 98 degrees


First, find the original equation

180 = (x) + (x + 16)


Simplify: 180 = 2x + 16


Next, use the subtraction property of equality to subtract 16 from both sides


180 - 16 = 2x + 16 - 16


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Then, you can use the division property of equality to find the value of x

164/2 = 2x/2


Simplify: 82 = x



Now, we know that the first angle equals 82 degrees and that the second angle equals 98 degrees
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A buoy is 8 km N 60° E of a boat as shown. How far east of<br> the boat is the buoy?
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Step-by-step explanation: see attachment

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What is the value of x in the equation 2x + 9 = 21?<br> O2<br> 06<br> 09<br> O 15
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Answer:

the answer is 6

Step-by-step explanation:

2x + 9 = 21

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