Register

A student says that the perimeter of a rectangle side lengths (2x-1) inches and 3x inches can be written as (10x-1) inches because 2(2x-1)+2(3x)=10x-1.Explain why this statement…

A student says that the perimeter of a rectangle side lengths (2x-1) inches and 3x inches can be written as (10x-1) inches because 2(2x-1)+2(3x)=10x-1.Explain why this statement…
125k views
5 votes
A student says that the perimeter of a rectangle side lengths (2x-1) inches and 3x inches can be written as (10x-1) inches because 2(2x-1)+2(3x)=10x-1.Explain why this statement is incorrect

User Diaa Saada
by
8.2k points

1 Answer

4 votes
P = 2L + 2W
P = 2(2x - 1) + 2(3x) = 4x - 2 + 6x = 10x - 2

the student distributed wrong.....2(2x - 1) = 4x - 2....added to 6x = 10x - 2, not 10x - 1
User Orane
by
8.0k points
← Prev Question Next Question →

No related questions found

Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories

Other Questions

What is .725 as a fraction
How do you estimate of 4 5/8 X 1/3
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
Link Copied!