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.

answer: yes youre right.

step-by-step explanation:

goog may have it for you

unless you made a typo, the answers are both a and c.

step-by-step explanation:

1.5/3 is .5 whereas 3/9 is .3333333 not proportional

22/33 is .66666 and 4/6 is also .66666 proportional

2/4 is .5 whereas 142/213 is .66666 not proportional

14/7 is 2 and 7/3.5 is also 2 proportional

you could've also checked it by doing this simple division:

if the larger fraction divides with the smaller fraction to equal 1, it is proportional. so let me show you what i mean:

when i divide 22/33 by 4/6 i get 1, so we know it is proportional, and it is the same with 14/7 and 7/3.5. now if i divide 3/9 by 1.5/3 i get .66666 so therefore we know it is not proportional.

there are many ways to do this so i wanted to show you some possible ways.

12r - 8 - 12

you have to combine like terms. below i have bolded the like terms:

12r - 8 - 12

together it combines to:

12r - 20

hope this !