Evaluate the rational expression for the given value of the variable.
for x = 2
A. - 4
B. - 
C. - 
D. - 
Answer: B
Mathematics
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Simplify.
? 
A. 21
B. 21
C. 18
D. 42
Mathematics
Solve the equation for x, where x is restricted to the given interval.y = 4 cot 
, for x in (0, 2?)
A. x = 
arccot 
B. x = 2 arccot 
C. x = 
arccot 4y
D. x = 2 arccot 4y
Mathematics
Solve the problem.Two pumps can fill a water tank in 45 minutes when working together. Alone, the second pump takes 3 times longer than the first to fill the tank. How long does it take the first pump alone to fill the tank?
Fill in the blank(s) with the appropriate word(s).
Mathematics
Divide and write the answer in simplest form.-1.2 ÷ 0.06
A. -20
B. -1.14
C. 
D. -11.4
Mathematics