An expression that occurs in calculus is given. Reduce the expression to lowest terms.
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Decide whether or not the number is a zero of the polynomial.P(x) = x4 - 9x2 - 5; -3
A. Yes B. No
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 missing length in the right triangle. If necessary, round to the nearest tenth.
A. 11.5 cm B. 80.5 cm C. 12.7 cm D. 161.0 cm
Mathematics
Multiply. Express the product in lowest terms.
? 
A. 
B. 
C. 
D. 
Mathematics