Solve.The power that a resistor must dissipate is jointly proportional to the square of the current flowing through the resistor and the resistance of the resistor. If a resistor needs to dissipate 
of power when 
of current are flowing through the resistor whose resistance is 
find the power that a resistor needs to dissipate when 
of current are
flowing through a resistor whose resistance is 
A. 14 watts
B. 98 watts
C. 126 watts
D. 28 watts
Answer: D
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Solve the problem.Find the centroid of the region enclosed between the cone with equation 
and the plane with equation 
A. (
, 
, 
) = 
B. (
, 
, 
) = 
C. (
, 
, 
) = 
D. (
, 
, 
) = 
Solve the equation (x in radians and ? in degrees) for all exact solutions where appropriate. Round approximate answers in radians to four decimal places and approximate answers in degrees to the nearest tenth.cos2 x + 2 cos x = -1
A. {? + 2n?}
B. {2n?}
C. {n?}
D. 
Use the appropriate geometric formula from the following list to find the requested measure. 
The area of two squares, each with a side measuring 15 yards
A. 225 sq yd B. 220 sq yd C. 60 sq yd D. 450 sq yd
Divide and simplify.
÷ 
A. 
B. (z - 3)(z - 5)
C. 
D. 