Answer:
Step-by-step explanation:
Question not written well
The equation of the ball is meant to be in a parabola or trajectory form.
So, h = -4.912t² + 24.5t + 1
The ball will hit the ground when the height is 0
I.e. h= 0
Therefore,
-4.912t² + 24.5t + 1 = 0
Using almighty formula,
a = -4.912 b = 24.5 c = 1
t = (-b±√b²-4ac) / 2a
t = (-24.5±√24.5²-4×-4.912 × 1) / 2 × -4.912
t = (-24.5±√600.25 + 19.648) / 9.824.
t = (-24.5 ± 24.898) / 9.824
So,
t = (-24.5 + 24.898) / 9.824
t = 0.398 / 9.824
t = 0.04seconds
Or
t = (-24.5 - 24.898) / 9.824
t = -5.03 seconds
So, we are going to discard the negative time,
t = 0.04 second is the correct time the ball will hit the ground
Step-by-step explanation:
<u>1.)</u> 2(3)(4) - 4 = 24 - 4 = 20
<u>2.)</u> 8(2) / (4) = 16/4 = 4
<u>3.)</u> 6(3) / (2) = 18 / 2 = 9
<u>4.)</u> 4(2) + 7 = 8 + 7 = 15
<u>5.)</u> (2)(4) - 7 = 8 - 7 = 1
<u>6.)</u> 2(3) - (2) = 6 - 2 = 4
Answer:
Step-by-step explanation:
Move all terms that don't contain to the right side and solve.
Answer:
24,34,31
Step-by-step explanation:
The y-intercept represents the initial girth of the tree. Assuming that the X-axis represents time in this scenario (as it usually does) the y-axis, therefore, represents the girth of the tree. The y-intercept is located where X = 0. So if no time has passed then this must be the first measurement of the girth of the tree.