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Chapter 5: Q. 189 (page 644)
Three times a number plus three times a second number is fifteen. Four times the first plus twice the second number is fourteen. Find the numbers.
First number is 2 and Second number is 3
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Solve a System of Equations by Elimination -
Stephanie left Riverside, California, driving her motorhome north on Interstate 15 towards Salt Lake City at a speed of 56 miles per hour. Half an hour later, Tina left Riverside in her car on the same route as Stephanie, driving 70 miles per hour. Solve the system
(a) for t to find out how long it will take Tina to catch up to Stephanie.
(b) what is the value of s, the number of hours Stephanie will have driven before Tina catches up to her?
Determine whether an ordered pair is a solution of a system of equations. In the following exercises, determine if the following points are solutions to the given system of equations.
(a)
(b)
Determine whether an ordered pair is a solution of a system of equations. In the following exercises, determine if the following points are solutions to the given system of equations.
(a)
(b)
In the following exercises, solve the following systems of equations by graphing.
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