Simplify. Assume that variables can represent any real number.
A. 7
b2
B. 4
ab2
C. 4
b2
D. 7
b4
Answer: C
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Solve and, when appropriate, round the answer to the nearest tenth.The radius of a sphere depends on its surface area, S, and is given by the formula r = 
.What is the surface area of a sphere with radius of 6.2 inches?Use 3.14 for ?.
A. 120.7 square inches B. 482.8 square inches C. 77.9 square inches D. 19.5 square inches
For the point given in rectangular coordinates, find equivalent polar coordinates 
for 
and 
Approximate ? to the nearest hundredth of a radian.(-7, -24)
A. (25, 4.43) B. (50, 1.29) C. (25, 1.29) D. (25, 6.00)
Convert.8.9 cm to millimeters
A. 0.89 mm B. 890 mm C. 89 mm D. 0.089 mm
Add or subtract, if possible. Assume that all variables represent non-negative values. Simplify your answer. 2
+ 9
A. 18
B. 11
C. 11
D. 11