Lemma
EasyQuadratics
OpenStax, Intermediate Algebra 2e §9.5 Solve Applications of Quadratic Equations · Exercise 21 · Algebra · Quadratics

Solve Applications of Quadratic Equations · Exercise 21

Solve using any method. Round your answers to the nearest tenth, if needed.

A firework rocket is shot upward at a rate of 640 ft/sec. Use the projectile formula h = −16t^2 + v_0t to determine when the height of the firework rocket will be 1200 feet.

~5 minWritten answer · compare with the solution

OpenStax, Intermediate Algebra 2e · §9.5 Solve Applications of Quadratic Equations · Exercise 21

Stuck? A gentle nudge

No hints for this one.

Something off?
Workspace
Your working

Check your full solution

Upload photos of your handwritten work or a PDF, and Lemma will read it and tell you whether it's right — and where it first goes wrong if not.