What is the measure of ∠AOC?

Describe the 2 algebraic methods you can use to find the zeros of the function f(t)=-16t^2+400.

Merrida uses a pattern in the multiplication table below to find ratios that are equivalent to 7: 9. if merrida multiplies the first term, 7, by a factor of 6, what should she do to find the other term for the equivalent ratio? multiply 9 by 1. multiply 9 by 6. multiply 9 by 7. multiply 9 by 9.

With number 11 ( show how you got the answer)