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lesantik [10]
3 years ago
10

A number to the 10th power divided by the same number to the 7th power equals 216

Mathematics
2 answers:
VashaNatasha [74]3 years ago
6 0

Answer: 5

Step-by-step explanation: Let x = the number

x^10 ÷ x^7 = 125

x^3 = 125

x = 5

jeyben [28]3 years ago
5 0
Sorry i need more information
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You have posted 2 separate questions here.  Please, next time, separate them with a blank line:

<span>A circle has an area of 81 3.14 units . what is the diameter in terms of 3.14?

I'd prefer you write this as 
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Your second question, separated from the first, is:

"</span><span>a circle has an area of 81 Pi square units what is the diameter of the circle?"
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Use the following formula or formulas:  d = 2*r; A = pi*r^2; A = pi*(d/2)^2.  Find r first, and then find d.

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