Answer:
B
Step-by-step explanation:
When you raise something to the power of '1 over n', it is the same as taking the nth root.
Example:

Answer:
5.8
Step-by-step explanation:
32.8+ -27=5.8
Answer: 73.5mi²
Step-by-step explanation:
Area of triangle = 1/2×b×h
= 1/2×14×10.5
= 7×10.5
=73.5mi²
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Answer:
<h2><u><em>
x = 4</em></u></h2>
Step-by-step explanation:
that's an equilateral triangle, 3 equal side and 3 equal angles of 60°,
so 10x + 20 = 60
solve with an equation
10x + 20 = 60
10x = 60 - 20
10x = 40
x = 40 : 10
x = 4
--------------------------
check
10 * 4 + 20 =
60°
the answer is good