Evaluate the expression.
-4
A. 625
B. -125
C. -625
D. 125
Answer: A
Mathematics
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Find the derivative of y with respect to the appropriate variable.y = 9 tanh-1 (cos x)
A. ln 
sin x
B. 
C. 
D. 
Mathematics
Solve the problem.Hye-Ran, who is 1.60 m tall, wishes to find the height of a tree with a shadow 30.06 m long. She walks 
from the base of the tree along the shadow of the tree until her head is in a position where the tip of her shadow exactly overlaps the end of the tree top's shadow. How tall is the tree? Round to the nearest hundredth.
A. 1.60 m B. 5.72 m C. 2.75 m D. 2.22 m
Mathematics
Find the least common denominator.
, 
A. m(m - 4)2(m - 5) B. m(m + 1)(m - 5) C. m(m - 4)(m - 5) D. (m + 1)2
Mathematics
Use cross products to determine whether the pair of fractions is equivalent.
and 
A. not equivalent B. equivalent
Mathematics