Holly plays tennis on the school tennis team. She can hit a tennis ball really high in the air. She learned that the
quadratic equation below could be used to determine the
height of a tennis ball after it was hit with a tennis racket.
y = -6x2 + 36%
She defined the variables for us:
y = the height of the tennis ball in feet
x = seconds after the ball is hit with the
How long does it take for the ball to hit the ground in
seconds?
Hint: When the ball hits the ground, the height of the tennis
ball, y, is 0.

can you give me more detail on this! ?

step-by-step explanation:

d

step-by-step explanation:

d

goog may have it for you

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.