Algebra 1 Literal equations

Question

what does a=tr2, solve for r this one is confusing me b/c it is different then the other ones i was solving. P.s i need the answer by 3:00 pm

Answer 1

a= tr^2

divide both sides by t to get

a/t = r^2

r^2 = a/t

take square roots of both sides

r = + or - sqr(a/t) = + or - sqr(a)/sqr(t)

Answer 2

a=tr²

"Solve for" means to isolate that variable. Do that by applying reverse operations as needed.

r² = a/t [switch sides; divide both sides by t]

r = √(a/t) [When evaluating, assume t≠0 and there is both positive and negative square root]