Solve the equation -t^2+2t+15=0

t=-3, t=5

Step-by-step explanation:

what 2 numbers multiply to -15 (A*C) and add to 2 (B)

5*-3

so the factor are (-t+5)(t+3)=0, set each factor equal to zero and solve.

-t+5=0, t=5

t+3=0, t=-3

191 students play sports and ninety-seven 10th graders were surveyed.

step-by-step explanation:

the answer is 5/14.

hope this .