Lemma
EasyQuadratics
OpenStax, Elementary Algebra 2e §10.4 Solve Applications Modeled by Quadratic Equations · Example 5 · Algebra · Quadratics

Solve Applications Modeled by Quadratic Equations · Example 5

A firework is shot upwards with initial velocity 130 feet per second. How many seconds will it take to reach a height of 260 feet? Round to the nearest tenth of a second.

Its source prints no answer for this problem, so there's nothing to check against.

~5 minWritten answer · compare with the solution

OpenStax, Elementary Algebra 2e · §10.4 Solve Applications Modeled by Quadratic Equations · Example 5

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.