In right triangle ABC, mZC= 90°, and sin A
3
5
What is the value of cos B?

Asequence {an} is defined recursively, with a1 = 1, a2 = 2 and, for n > 2, an = an-1 an-2 . find the term a241

In priyas math class there are 10 boys and 15 girls. what is the ratio of boys to girls in priyas math class? express your answer as a decimal

X+y=-4 x-y=2 use elimination with adding and subtraction