Answer: Choice D. 
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Work Shown:
We multiply the coefficients 9.2 and 7 to get 64.4, which is the same as 6.44*10^1 in scientific notation. When multiplying exponential expressions with the same base, we add the exponents
This is what the steps could look like

The final result is in scientific notation as the coefficient c is restricted such that 
Answer:
5y = 18
Step-by-step explanation:
Answer:
(8, 11π/6)
Step-by-step explanation:
r= √(4√3)²+(-4)² = √48+16=√64=8
0 = tan~¹ -4/(4√3)
= tan~¹ -⅓√3 = 330° = 11π/6
the polar coord. => (8, 11π/6)
Answer:

Step-by-step explanation:
Using the rules of radicals
= 
×
⇔ 
Given
= 
Simplifying the radicals
= 
= 
=
×
= 7
and
= 8
The simplified radical is
