There are 3 boys and 8 girls in a class. what is the ratio of all students in the class to girls? what is the ratio of all students in the class to boys?

The chs baseball team was on the field and the batter popped the ball up. the equation b(t)=80t-16•16+3.5 represents the height of the ball above the ground in feet as a function of time in seconds. how long will the catcher have to get in position to catch the ball before it hits the ground? round to the nearest second

The number of branches on a tree demonstrates the fibonacci sequence. how many branches would there be on the next two levels of this tree? 13 | | | m branches

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'