Rationalize the denominator.
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Find the reference angle for the given angle.40°
A. 40° B. 130° C. 50° D. 140°
Mathematics
The area of the triangular swimming pool shown in the illustration is doubled by adding a rectangular wading pool. Find the width of the pool (x).
(The area of a triangle = 
, and the area of a rectangle = lw).
?
?
?
A. 15 feet
B. 24 feet
C. 12 feet
D. 11 feet
E. 13 feet
Mathematics
Determine whether the statement is true or false.In the exponential expression -77, -7 is the base.
A. True B. False
Mathematics
Use a sum or difference identity to find the exact value.sin 185° cos 65° - cos 185° sin 65°
A. 
B. - 
C. - 
D. 
Mathematics