Perform the indicated operation and simplify.
- 
A. 
B. 
C. 
D. 
Answer: D
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Provide an appropriate response. A surveyor measures two sides of a triangular lot and the angle formed by these two sides. What is the length of the third side if the two measured sides are 87 ft and 120 ft and the angle formed by these two sides is 112°?
A. 33.00 ft B. 148.2 ft C. 172.6 ft D. 172.8 ft
Find the exact value under the given conditions.sin ? = 
, 0 < ? < 
; cos ? = 
, 0 < ? < 
Find cos (? + ?).
A. 
B. 
C. 
D. 
Solve the problem.A simple exercise machine can be constructed by mounting a stiff spring securely to a wall and attaching a "T" handle to the free end of the spring. The arms can be exercised simply by pulling the "T" handle towards the torso. For a particular spring, the stretch distance is related to the work exerted by the equation x = 
, where W is the work exerted in joules and x is the stretch distance in cm. How far will you stretch the spring if you exert 669 joules of work? Round your answer to three decimal places.
A. 0.134 cm B. 0.089 cm C. 0.016 cm D. 0.125 cm
Factor completely. If the polynomial cannot be factored, say it is prime.10y2 + 45y - 25
A. 5(2y + 1)(y - 5) B. 5(2y - 1)(y + 5) C. (10y - 5)(y + 5) D. prime