What is the equivalent of this equation ? (9x^2-24x+16)^2-(5+6x−2x^2)

which of these is the answer?

a. 7x^2-30x+11

b. 7x^2-6x-21

c. 11x^2-30x+11

d. 11x^2-30x+11.
(i really need help)

24/56=hx^7

step-by-step explanation:

0.02040816326

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

45.36 feet per second

step-by-step explanation:

tyrone travels 30 miles in 58.2 minutes.  

1 mile = 5280 feet; this means he travels

30(5280) = 158400 feet in 58.2 minutes.

1 minute = 60 seconds; this means he travels 158400 feet in

58.2(60) = 3492 seconds.

this gives us the unit rate of

158400/3492 = 45.36 feet per second.