Provide an appropriate response.
A 14-foot ladder leans against a building. What is the angle formed between the ladder and the ground if the base of ladder is 3.4 feet away from the wall?
A. 13.7°
B. 14.1°
C. 76.3°
D. 75.9°
Answer: C
Mathematics
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Divide.
A. 7r2 + 8r + 2
B. 7r2 - 8r - 2
C. r2 + 2r + 8
D. 7r2 + 8r + 
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Write the expression in the form a + bi, where a and b are real numbers.(
)2
A. 3 B. 3i C. 9i D. -3
Mathematics
Find an equation of an ellipse satisfying the given conditions.Vertices: (0, -10) and (0, 10); length of minor axis: 6
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 10
Mathematics
Simplify the radical. Assume that all variables represent nonnegative real numbers. 
A. 4
B. 16z
C. 4z
D. 4z2
Mathematics