SOLUTION: solve for t: 15t^2-11t=12 a. 4/5 and -3/5 b. 3/4 and -4/3 c. 4/3 and -3/5 d. -4/5 and -3/5

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: solve for t: 15t^2-11t=12 a. 4/5 and -3/5 b. 3/4 and -4/3 c. 4/3 and -3/5 d. -4/5 and -3/5      Log On


   

Question 131295: solve for t: 15t^2-11t=12
a. 4/5 and -3/5
b. 3/4 and -4/3
c. 4/3 and -3/5
d. -4/5 and -3/5
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
15t%5E2-11t=12 Start with the given equation

15t%5E2-11t-12=0 Subtract 12 from both sides

%283t-4%29%285t%2B3%29=0 Factor the left side


3t-4=0 or 5t%2B3=0 Set each factor equal to zero


t=4%2F3 or t=-3%2F5 Solve for t in each case



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Answer:

So the solutions are


t=4%2F3 or t=-3%2F5
So our answer is C