Rewrite with only sin x and cos x.cos 2x - sin x
A. cos2 x - 3 sin x
B. cos2 x - sin2 x - sin x
C. cos2 x - sin3 x
D. cos2 x + sin2 x + sin x
Answer: B
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Find the derivative of y with respect to the independent variable.y = 5cos ??
A. -5cos ?? ln 5 sin ?? B. 5cos ?? C. -?5cos ?? ln 5 sin ?? D. ?5cos ?? ln 5
Solve.The time in hours it takes a satellite to complete a circular orbit about the earth varies directly as the radius (from the center of the earth) of the orbit and inversely as the orbital velocity. If a satellite completes an orbit 
above the earth in 
at a velocity of 
how long would it take a satellite to complete an orbit if it is circling 1,700 km above the earth at 
alt="" style="vertical-align: -4.0px;" /> (Assume the radius of the earth is 
A. 580 min
B. 120 min
C. 220 min
D. 190 min
Provide an appropriate response.Solve the quadratic equation, rounding to thousandths when necessary: 0.16x2 = 0.25
A. x = ±1.5625 B. x = ±0.8i C. x = ±1.25 D. x = ±1.25i
Find the reciprocal of the number or algebraic fraction.- 
A. - 
B. 
C. 
D. 1