Answer:
3.4 × 10^25
Step-by-step explanation:
First number has to be less than 10 so 3.4.
Count how many decimal places the decimal needs to move.
Answer:
Step-by-step explanation:
<em>Hey there!</em>
<em />
Well, using 19 - 28/n and plugging 7 in for n.
19 - 28/7
19 - 4
= <u>15</u>
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<em>Hope this helps :)</em>
Answer:
2√(5/π) ≈ 2.523
Step-by-step explanation:
The radius can be found using the area formula:
A = πr²
20 = πr² . . . . . fill in the given value
20/π = r² . . . . . divide by π
√(20/π) = r = 2√(5/π) . . . take the square root and simplify
You can use your calculator to find a numerical value for this:
r = 2√(5/π) ≈ 2.52313
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<em>Comment on the form of the answer</em>
Radicals are often considered to be in simplest form when they do not contain fractions or square factors. Here, the "simpler" form would be ...
r = (2/π)√(5π)
involving the irrational number π in two calculations. My preference for evaluating the expression for r is to leave it as √(20/π) or 2√(5/π).
X + 25 = 12
-25 on both sides
x = -13
Answer:
x = -13
Answer:
.4
Step-by-step explanation:
2/5
We want the denominator to be a power of 10
2/5 * 2/2 = 4/10
The decimal is .4