9. A football is kicked into the air. It's height in meters after t seconds is given by h(t) = -4.2(t – 3.2)2 + 25
a) What was the height of the football when it was kicked?
b)
What was the maximum height of the ball?
At what time was the maximum height reached?
c)
How high was the ball after 1 second?
d)
Was the ball still in the air after 5 seconds?

anser is a

step-by-step explanation:

negitive slope

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.

answer: yes, since the line has a steeper rate of change than the exponential the y-values will be greater and they will only intersect one time.

thats one

step-by-step explanation: