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MATH / Billy shoots an arrow from 10 feet above the ground. The height of this arrow…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

problem

Billy shoots an arrow from 10 feet above the ground. The height of this arrow can be expressed by the equation h=10−23t−10t2h=10-23t-10t^2, where tt is time in seconds since the arrow was shot. If the center of a target is raised 5 feet off the ground, in how many seconds must the arrow reach the target in order for Billy to hit the bulls eye?
Plain-text mathematical notation (without MathML)
Billy shoots an arrow from 10 feet above the ground. The height of this arrow can be expressed by the equation h=10−23t−10t², where t is time in seconds since the arrow was shot. If the center of a target is raised 5 feet off the ground, in how many seconds must the arrow reach the target in order for Billy to hit the bulls eye?
Original LaTeX notation
Billy shoots an arrow from 10 feet above the ground. The height of this arrow can be expressed by the equation $h=10-23t-10t^2$, where $t$ is time in seconds since the arrow was shot. If the center of a target is raised 5 feet off the ground, in how many seconds must the arrow reach the target in order for Billy to hit the bulls eye?

level

Level 5

type

Algebra

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Source and history

task_id
13cd3e89-cb5f-5603-a4cb-5c12b92615a4
task_key
algebra--test--13cd3e89-cb5f-5603-a4cb-5c12b92615a4
task_revision_id
1
config / split
algebra / test

Official source

initial import