A projectile is thrown upward so that its distance above the ground after t seconds is h (t) = - 16t^2 + 570t. After how many seconds does it reach its maximum height?

What's 3 (2x+5) algebraic

A conical tent of the given volume has to be constructed find the ratio of the height to the radius of the base so as to minimize the canvas required for the tent

26% of a number is what fraction of that number?

Crystal earns $5.50 per hour mowing lawns. Write a rule to describe how the amount of money m earned is a function of the number of hours h spent mowing lawns. How much does Crystal earn if she works 3 hours and 45 minutes?

Assume that China has about 1 billion people, an increase of 15 million would result in a relative change of ___%

Y = 5x - 1 -15x - 3y = 3 How many solutions does this linear system have?

What is 1/100 of 605 feet

Solve d = c π for π. A) π = cd B) π = c d C) π = d c D) π = c - d

1/5X-3=4 solve the equation

If a pump can fill a pool within 6 hours, and another pump can empty the pool within 3 hours, how long will it take the pool to empty when it's full and when both pumps are working?