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Chapter 5: Q. 68 (page 596)
A marketing company surveys 1,200 people. They surveyed twice as many females as males. How many males and females did they survey?
They surveyed 400 males and 800 females.
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Solve a System of Equations by Elimination -
In the following exercises, translate to a system of equations and solve the system.
Daniela invested a total of \(50,000, some in a certificate of deposit (CD) and the remainder in bonds. The amount invested in bonds was \)5000 more than twice the amount she put into the CD. How much did she invest in each account?
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, translate to a system of equations and solve.
Amara currently sells televisions for company A at a salary of \(17,000 plus a \)100 commission for each television she sells. Company B offers her a position with a salary of \(29,000 plus a \)20 commission for each television she sells. How televisions would Amara need to sell for the options to be equal?
In the following exercises, translate to a system of equations and solve.
The measure of one of the small angles of a right triangle is 45 less than twice the measure of the other small angle. Find the measure of both angles.
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