Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 6 - Systems of Equations and Inequalities - Get Ready: 13

Answer

a) height = $2x-1$ b) area = $\frac{1}{2}x(2x-1)$ c) 248 cm$^2$

Work Step by Step

a) To write an expression for one less than twice the length, you multiply the length by 2 and subtract 1 from the product. b) The area of a triangle is $\frac{1}{2}$ the length times the height. c) $\frac{1}{2}x(2x-1)\longrightarrow$ substitute 16 for x and solve $\ \ \ $=$\frac{1}{2}(16)(2\times16-1)$ $\ \ \ $=$8(31)$ $\ \ \ $=$248$
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