Hi what are you all doing love math what is this answer ?Goldbach's Conjecture Creative Commons

Suppose the radius of a circle is 16. what issuppose the radius of a circle is 16. what is its circumference its circumference

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

If 25% of y is 30, what is 60% of y?