In heather's physics class, she had to solve the equation 7=12at2+ut for u. which equation correctly solves for u?

B (7 -1/2 at^2)/t = u

Step-by-step explanation:

7 = 1/2 at^2 + ut

subtract 1/2 at^2 from each side

7 -1/2 at^2 =  1/2 at^2 + ut - 1/2 at^2

7 -1/2 at^2 = ut

divide by t

(7 -1/2 at^2)/t = ut/t

(7 -1/2 at^2)/t = u

i believe the answer is d.

hope it you! : d

∠cbe and ∠deb are same-side interior angles.

i took the test