Find the indicated derivative.Find y " if y = -2 cos x.
A. y " = 2 sin x
B. y " = -2 cos x
C. y " = -2 sin x
D. y " = 2 cos x
Answer: D
You might also like to view...
Solve the problem.A bathroom scale is compressed 
in. when a 180 lb person stands on it. Assuming that the scale behaves like a spring that obeys Hooke's law, how much does someone who compresses the scale 
in. weigh?
A. 45 lb B. 135 lb C. 90 lb D. 360 lb
Perform the indicated operations.( 7x2y - 2xy2 + 2xy - 5) + ( -3x2y - 8xy2 + 5xy + 8)
A. 5x2y2 - 13 B. 4x2y - 10xy2 + 7xy + 3 C. 10x2y - 9xy2 + 8xy + 13 D. -4x2y + 10xy2 + 7xy + 3
Find the expected value.Mr. Cameron is sponsoring an summer concert. He estimates that he will make $300,000 if it does not rain and make $60,000 if it does rain. The weather bureau predicts the chance of rain is 0.34 for the day of the concert. What are Mr. Cameron's expected concert earning?
A. $300,000 B. $360,000 C. $60,000 D. $218,400
Add or subtract as indicated.-11 + 5 - (-10) + 2
A. -14 B. 2 C. -24 D. 6