Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 2 - Section 2.4 - An Introduction to Problem Solving - Exercise Set: 10


x=4 3x=12 2+7x=30

Work Step by Step

Because you are trying to find the length of each section of the pipe first figure out how long it is as a whole. 46 ft Now that you know the given set all of the small pieces lengths equal to 46 ft (x)+(3x)+(2+7x)=46 ft Combine like terms 11x+2=46 Subtract the 2 from both sides 11x=44 Divide by 11 x=4 Plug 4 into each value for x to see the separate lengths x=4 3(4)=12 2+7(4)=30 Add them all together to check your work 4+12+30=46
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