Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 2 - Section 2.2 - The Multiplication Property of Equality - Exercise Set - Page 131: 69


The speed of the Concorde is $1502.2$ miles per hour.

Work Step by Step

This problem is asking for us to find the speed $A$ given the Mach number. We can plug in the value given for $A$ into the equation $M = \frac{A}{740}$ to find the speed of this aircraft. We plug in $2.03$ for $M$: $$2.03 = \frac{A}{740}$$ To isolate $A$, we multiply both sides of the equation by $740$ to get rid of the fraction: $$A = (2.03)(740)$$ We now multiply to get the value for $A$: $A = 1502.2$ miles per hour
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