Convert to a polar equation.y2 = 16x
A. sin2? = 16r2cos ?
B. sin2? = 16r cos ?
C. r sin2? = 16 cos ?
D. r2sin2? = 16 cos ?
Answer: C
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One of the values r (radius), d (diameter), C (circumference), or A (area) is given for a particular circle. Find the indicated value. Leave ? in your answer.A = 25? m2; C = ?
A. 5? m B. 50? m C. 10? m D. 10 m
Solve the equation.4x2 - 5x - 9 = 0
A. x = 
, -1
B. x = 
, 1
C. x = 
, 0
D. x =
, -1
Solve the problem.A rotating beacon is located 14 ft from a wall. If the distance from the beacon to the point on the wall where the beacon is aimed is given by a = 14|sec 2?t|,where t is in seconds, find a when t = 0.31 seconds. Round your answer to the nearest hundredth.
A. -38.03 ft B. 24.91 ft C. 31.47 ft D. 38.03 ft
Find the exact value of the expression.
A. - 
B. - 
C. -2
D. -