Solve the Problem $5 \mathrm {~m} 2 / \mathrm { s }$

question 216

Multiple Choice

Solve the problem.
-A piece of land is shaped like a right triangle. Two people start at the right angle of the triangle at the same time, and walk at the same speed along different legs of the triangle. If the area formed by the positions of the two people and their starting point (the right angle) is changing at $5 \mathrm {~m} 2 / \mathrm { s }$ , then how fast are the people moving when they are $4 \mathrm {~m}$ from the right angle? (Round your answer to two decimal places.)

• A) \(0.63 \mathrm {~m} / \mathrm { s }\)
• B) \(3.20 \mathrm {~m} / \mathrm { s }\)
• C) \(1.25 \mathrm {~m} / \mathrm { s }\)
• D) \(2.50 \mathrm {~m} / \mathrm { s }\)

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Definitions:

Familywise Error

Familywise error rate is the probability of making one or more false discoveries, or type I errors, when performing multiple hypotheses tests.

Type I Error

The incorrect rejection of a true null hypothesis, also known as a false positive.

Probability

A measure of the likelihood of a specific event occurring, expressed as a number between 0 and 1.

Power Assertion

A parenting or disciplinary technique that uses authority or physical power to enforce rules and manage behavior.