What is the variable worth in this problem 31.65=2.7( 1 - 2.5a) - 2.9a

2÷6+1/2 to the second power plus one

What is not true about kl and mn? what is mn? (show your work)

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