3 years ago

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

7 0

3 years ago

Read 2 more answers

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

Simplify: 164 = 2x

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

3 0

2 years ago

A buoy is 8 km N 60° E of a boat as shown. How far east of the boat is the buoy?

Bumek [7]

Answer:13.86km

Step-by-step explanation: see attachment