Use the reference angle to find the exact value of the expression. Do not use a calculator.cot 750°
A. 
B. -
C. 
D. - 
Answer: C
Mathematics
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Simplify.(-5xy)3
A. -15xy B. -125x3y3 C. -15x3y3 D. -125xy
Mathematics
Use the graph to find a ? > 0 such that for all x, 0 < 
< ? ? 
< ?.
A. 0.865 B. 0.4481 C. 0.46 D. 0.4169
Mathematics
Find dy for the given values of x and ?x.y = x3 - 4x2 + 2x + 1; x = 8, ?x = -0.3
A. 39 B. -37 C. 37 D. -39
Mathematics
Solve the equation.- 
a = -3
A. 21 B. -10 C. -11 D. 0
Mathematics