Answer:
The answer is the option A 
Step-by-step explanation:
we know that
The measure of 
radians is equal to 
so by proportion
Find the measure in radians of 
Find the measure in radians of 
therefore
In radian measure the angles are
when you multiply exponents, they add together and the base will remain the same:
-5+-2
=-7
therefore the answer is 8^-7
to get rid of the negative, flip the fraction so it becomes
1/8^7
Answer:
2800
Step-by-step explanation:
Just round the 43 to 40 and the 68 to 70. So the problem then converts to 40x70 to get a rough estimate. 40x70=2800
9 and 1/2 is a mixed number
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