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Andreyy89
3 years ago
11

C-0.2c Which other expression could Kelly use to calculate her cost before sales tax?

Mathematics
1 answer:
goldenfox [79]3 years ago
4 0

Answer:

C - (C/100x20)

Step-by-step explanation:

Cost minus the tax

the tax is 20 percent therefore cost divided by 100 times 20

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Suppose that in a normal half hour of practice, a tennis player expends 280 calories of energy.
sertanlavr [38]

Answer:

308 Calories

Step-by-step explanation:

So we start off with 280 as usual, but I will focus on the percent. The given percent is 110% "effort". What we would need to do here is, Firstly, change the percent into a decimal, and this is done by moving the decimal spot of 110%. What I mean is that 110.% and you move that little period over 2 times to the left and also remove the percent as for now because we will not need it. After that you would get 1.10. This is what we will multiply by. So if we did 280x1.10 it equals 308, and that is how I got 308

Hope this helps!

4 0
3 years ago
What is the length of the arc on a circle with radius 21 in intercepted by a 25° angle? Round your answer to the nearest tenth.
Lana71 [14]

Answer:

Step-by-step explanation:

The formula for determining the length of an arc is expressed as

Length of arc = θ/360 × 2πr

Where

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8 0
3 years ago
Read 2 more answers
(8.166×10^8)×(1.515×10^9)
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