The intersections of the equations represent the times when the bird and the ball are at the same height.
8t+20=-16t^2+65t
16t^2-57t+20=0, using the quadratic equation for expediency:
t=(57±√4529)/32 and since we know t>0
t≈3.88 seconds (at a approximate height of 51 feet)
F=5x
f-1x=5x-1x=4x
so f-1x=4x
Answer:
C) (-1, 1)
Step-by-step explanation: Format of a point (x, y)
First, you need to find the location of the x - axis.
Next, you need to find the y -axis point on the graph.
Lastly, you have to find where the two points meet (just follow the two line until they intercept)
and you're done! :)
Answer:
the square root of 91 lies between 9 and 10