Given the radius, r, of a circle, find the diameter; or given the diameter, d, of a circle, find the radius.d = 84 ft
A. r = 131.88 ft
B. r = 5538.96 ft
C. r = 21 ft
D. r = 42 ft
Answer: D
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Solve the differential equation subject to the initial conditions.t
+ 4y = t3; t > 0, y = 1 when t = 2
A. y = 
+ 
t-4, t > 0
B. y = 
+ 
t-4, t > 0
C. y = 
- 
t-4, t > 0
D. y = 
- 2t-4, t > 0
Use the given information to find the exact value of the trigonometric function.sin ? = 
; The terminal side of ? lies in Quadrant I.
Find sin 
.
A. 
B. 
C. 
D. 
Construct a truth table to decide if the two statements are equivalent.~p ? ~q; ~(p ? q)
A. True B. False
Solve the problem.A child throws a ball with a speed of 4 feet per second at an angle of 48° with the horizontal. Express the vector described in terms of i and j. If exact values are not possible, round components to 3 decimals.
A. 2.973i + 2.677j B. 2.973i - 2.677j C. 2.677i + 2.973j D. -2.677i + 2.973j