here is my question for all. why do we need to know algebra? i mean im not gonna need to figure out variables and exponents asking for a mcflurry​

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =

How far could you drive on 50 gallons of gas

Abcd is a square. what is the measure of angle bac