Simplify the expression. Express the answer so that all exponents are positive. Whenever an exponent is 0 or negative, we assume that the base is not 0.
-3
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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The polar equation of a circle is given. Give polar coordinates for the center of the circle and identify its radius.r = 6 cos ?
A. C(3, 0), radius = 3
B. C
, radius = 3
C. C
, radius = 6
D. C(6, 0), radius = 6
Mathematics
Solve the equation for the indicated variable.S = 2?rh + 2?r2; solve for h
A. h = S - r
B. h = 2?(S - r)
C. h = 
D. h = 
- 1
Mathematics
Find the midpoint of the line segment formed by joining the points P1 and P2.P1 = (9
, -7
); P2 = (12
, -2
)
A. 
B. 
C. 
D. (21
, -9
)
Mathematics
Expand.(x - 
)5
A. x5 - 5x4
+ 70x3 - 70x2
+ 245x - 49
B. x5 - 5x4
+ 7x3 - 70x2
+ 245x - 49
C. x5 - 5x4
+ 70x3 - 70x2
+ 49x - 49
D. x5 - 5x4
+ 70x3 - 70x2
+ 245x - 49
Mathematics