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marissakirk8785
02.06.2021 •
Mathematics
A ball is launched out of a cannon that is 24 feet off the ground. The height of the ball after "t" seconds is represented by
h(t) = -16t² + 20x + 24
How many seconds will it take for the to reach the ground?
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Ответ:
Given:
The height of ball is represented by the below function:
To find:
The number of seconds it will take to reach the ground.
Solution:
We have,
At ground level, the height of ball is 0, i.e.,
.
Taking out greatest common factor.
Splitting the middle term, we get
Using zero product property, we get
Time cannot be negative, so
.
Therefore, the ball will reach the ground after 2 seconds.
Ответ:
C
Step-by-step explanation:
they are parallel ( having same gradient)
and parallel lines never intersect.
therefore, no solutions.