Find the exact value of the expression.tan (135° - 30°)
A. 
- 2
B. 2 - 
C. -2 - 
D. 2 + 
Answer: C
Mathematics
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Solve the problem.The 10 ft wall shown here stands 33 feet from the building. Find the length of the shortest straight beam that will reach to the side of the building from the ground outside the wall.
A. 43 ft B. 58.7 ft C. 56.7 ft D. 57.7 ft
Mathematics
Consider the normal distribution given below and assume that P is a point of inflection of the curve.
Find the median M of the distribution.
A. 50 m B. 34 m C. 81 m D. 47 m E. 115 m
Mathematics
Simplify, where possible.6a - 4b + 2
A. -2a + 2 B. 2ab + 2 C. 6a - 4b + 2 D. 4ab
Mathematics
Find the GCF for the list.189x4, 63x6
A. 63x2 B. 21x2 C. 189x4 D. 63x4
Mathematics