Simplify the trigonometric expression by following the indicated direction.Rewrite over a common denominator: 
+ 
What will be an ideal response?
Mathematics
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Find the sum, if it exists.
A. 100 B. - 60 C. 60 D. Does not exist.
Mathematics
Find the derivative of the function by using the definition.y = 2x2 + 9x + 6
A. 4x + 9 B. 2x + 9 C. 2x2 + 9 D. 4x2 + 9x
Mathematics
Solve.The distance D that a spring is stretched by a hanging object varies directly as the weight W of the object. If a 11-kg object stretches a spring 85 cm, find the distance when the weight is 21-kg. Round your answer to the nearest whole centimeter.
A. 117 cm B. 8 cm C. 162 cm D. 3 cm
Mathematics
Simplify by removing grouping symbols and combining like terms.6m[-4m2 + 5(-5 - m)]
A. -24m3 - 5m - 25 B. -24m3 - 6m2 - 150m C. -24m3 + 30m2 - 150m D. -24m3 - 30m2 - 150m
Mathematics