Solve the equation.
a - 
= -6
A. -11
B. -13
C. 11
D. 13
Answer: A
Mathematics
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Solve the problem.To approximate the speed of a river, a circular paddle wheel with radius 0.43 feet is lowered into the water. If the current causes the wheel to rotate at a speed of 14 revolutions per minute, what is the speed of the current? If necessary, round to two decimal places.
A. 0.07 mph B. 0.21 mph C. 37.82 mph D. 0.43 mph
Mathematics
Use the product rule to simplify the expression. Write the result using exponents.x7 ? x8
A. x16 B. x7 C. x8 D. x15
Mathematics
Using following result find a set of parametric equation of the line.
?
?
Line: passes through 
and 
?
A. 
B. 
,
C. 
,
D. 
E. 
Mathematics
Solve.
= 81
A. x = 6561 B. x = 729 C. x = 9 D. x = 262,144
Mathematics