Many times this technique is used when we want to rearrange a formula to solve for a quantity of interest. For a rectangle, the perimeter, P, can be found if the two dimensions of length, L, and width, W, are known. (a) If a rectangle has a length of 12 inches and a width of 5 inches, what is the value of its perimeter? Include units. W (b) Write a formula for the perimeter, P, in terms of L and W. (c) Rearrange this formula so that it "solves" for the length, L. Determine the value of L when P= 20 and W = 4.

Algebra and Trigonometry (6th Edition)
6th Edition
ISBN:9780134463216
Author:Robert F. Blitzer
Publisher:Robert F. Blitzer
ChapterP: Prerequisites: Fundamental Concepts Of Algebra
Section: Chapter Questions
Problem 1MCCP: In Exercises 1-25, simplify the given expression or perform the indicated operation (and simplify,...
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Many times this technique is used when we want to rearrange a formula to solve for a quantity of interest.
For a rectangle, the perimeter, P, can be found if the two dimensions of length, L, and width, W,
are known.
(a) If a rectangle has a length of 12 inches and a width of 5
inches, what is the value of its perimeter? Include units.
W
(b) Write a formula for the perimeter, P, in terms of L and W.
(c) Rearrange this formula so that it "solves" for the length, L. Determine the value of L when P= 20 and
W = 4.
Transcribed Image Text:Many times this technique is used when we want to rearrange a formula to solve for a quantity of interest. For a rectangle, the perimeter, P, can be found if the two dimensions of length, L, and width, W, are known. (a) If a rectangle has a length of 12 inches and a width of 5 inches, what is the value of its perimeter? Include units. W (b) Write a formula for the perimeter, P, in terms of L and W. (c) Rearrange this formula so that it "solves" for the length, L. Determine the value of L when P= 20 and W = 4.
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