There is no image or problem so I can't really help you sorry
Answer:
A) x=
B) x=9.49
Step-by-step explanation:
<h3>Answer:</h3>
y = 17x - 4.5x²
height = 16m at 2 sec
total time = 3.77 sec
<h3>Step-by-step explanation:</h3>
Given the initial velocity of rocket = 56ft/sec
We use newton formula
<h3 /><h3>s = ut + 1/2at²</h3><h3>where s = distance</h3>
u = initial velocity
t= time
a = acceleration due to gravity = 9.8m/s²
since the rocket is launched upward, it is against the gravity so a = -9.81.
56 feet = 17.0688 = 17
suppose s = height = y and time = x
y = 17x - 1/2(9.81)x²
or
y = 17x - 4.5x²
b)
as x can not be negative so domain will be from 0 to 3.78
put value of x to find value of y and then plot these on graph
This graphs will be a parabola which opens downward.
c)
at 2 sec, y value is greatest = 16 meters
time for which rocket was in the air = 3.77sec
Answer:
It is indeed 63
Step-by-step explanation:
The easy way to go about this is to recognize that if the triangles are similar, the ratio between the similar sides will be the same.
Notice:
4/5 = 36/45
So:
4/7 should = 36/x
If:
4/7 = 36/x
4x/7 = 36
4x = 36*7
x=36*7/4
x=63
