Multiply and simplify.
? 
A. 1
B. 
C. -1
D. 0
Answer: A
Mathematics
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Which formula expresses the measure of each angle in an n-sided polygon? ?
A.
?180(n - 2)
B.
?180(n + 2)
C.
?
D.
?180(n - 2) ÷ 2
E.
?The number of sides decreased by two is divided by the number of sides.
Mathematics
Simplify the algebraic expression. [4x2 + (10x2 + 1)] - [-(-7x2 - (-4 - 5x2)) + 8x2]
A. 4x2 + 5 B. 24x2 - 3 C. -26x2 - 5 D. 8x2 - 3
Mathematics
Solve.Sue rowed her boat across Lake Bend and back in 3 hours. If her rate returning was 2 mph less than the rate going, and if the distance each way was 7 miles, find her rate going.
A. 1.5 mph B. 3.7 mph C. 5.5 mph D. 5.9 mph
Mathematics
Multiply and simplify. Assume that all variables represent positive real numbers.
(
+ 
)
A. 30
B. 15 + 9
C. 15 + 3
D. 225 + 3
Mathematics