Solve the problem. Assume projectile is ideal, launch angle is measured from the horizontal, and launch is over a horizontal surface, unless stated otherwise.A projectile is fired with an initial speed of 416 m/sec at an angle of 45°. What is the greatest height reached by the projectile? Round answer to the nearest tenth of a meter.
A. 17,658.8 m
B. 60.0 m
C. 43,264.0 m
D. 4414.7 m
Answer: D
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Add. 9 + (-16) + 8 + (-13) + 9 + (-13)
A. -68 B. 0 C. -16 D. -32
Find a formula for the nth term of the sequence.The sequence 7, -7, 7, -7, 7, . . . (7's with alternating signs)
A. an = 7(-1)n B. an = 7(-1)2n-1 C. an = 7(-1)2n+1 D. an = 7(-1)n+1
Simplify the expression. Assume all variables represent positive real numbers.
- 
+ 
A. 
B. - 
C. 
D. 
Solve the problem.A balloon in the shape of a sphere is deflating. Given that t represents the time, in minutes, since it began losing air, the radius of the balloon (in cm) is 
Let the equation V(r) = 
?r3 represent the volume of a sphere of radius r. Find and interpret (V ? r)(t).
A. (V ? r)(t) = 
?(t - 23)3; This is the volume of the balloon (in cm3) as a function of time (in minutes).
B. (V ? r)(t) = 
?(23 - t)3; This is the volume of the balloon (in cm3) as a function of time (in minutes).
C. (V ? r)(t) = 23 - 
?(23 - t)3; This is the volume of the air lost by the balloon (in cm3) as a function of time (in minutes).
D. (V ? r)(t) = 
?(23 - t)3; This is the volume of the air lost by the balloon (in cm3) as a function of time (in minutes).