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bogdanovich [222]
3 years ago
10

Dan uses a remote control to make his drone take off from the ground. Function h represents the height, in feet, of the drone t

seconds after it begins flying.
Which statement correctly describes this situation?

A.
The drone is on the ground at 0 and 16 seconds.
B.
The drone is on the ground at 0 and 4 seconds.
C.
The drone is on the ground at 2 and 4 seconds.
D.
The drone is on the ground at 0 and 2 seconds.
Mathematics
2 answers:
jasenka [17]3 years ago
6 0

Answer: C.   The drone is on the ground at 0 and 4 seconds.

Step-by-step explanation:

Here the function that shows the height of the drone,

h(t) = -16(t-2)^2+64

Where t is the time in seconds.

Since, the drone is ground when, h(t) = 0

-16(t-2)^2+64=0

-16(t-2)^2 = -64   (by subtracting 64 from both sides 64)

(t-2)^2 = 4           (dividing both sides by -16 )

t^2-4t+4= 4        

t^2-4t= 0             (by subtracting 4 from both sides)

t(t-4)= 0      

⇒ t = 0 or t = 4  

Thus, Option C is correct.

LUCKY_DIMON [66]3 years ago
3 0
I think it’s c I am not sure
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Step-by-step explanation:

Right, okay, so this is a bit of a weird one. Let's go step by step.

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