Chapter 4: Q. 340 (page 479)
In the following exercises, solve the systems of equations by substitution.
The system of linear equations has no solutions.
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The Jones family took a -mile canoe ride down the Indian River in two hours. After lunch, the return trip back up the river took three hours. Find the rate of canoe in still water and the rate of current.
The sum of two number is . One number is less than the other. Find the numbers.
Translate to a system of equations and solve:
Priam has a collection of nickels and quarters, with a total value of . The number of nickels is six less than
three times the number of quarters. How many nickels and how many quarters does he have?
Translate to a system of equations and solve:
Greta wants to make pounds of a nut mix using peanuts and cashews. Her budget requires the mixture to cost
her per pound. Peanuts are per pound and cashews are per pound. How many pounds of peanuts and
how many pounds of cashews should she use?
Two angles are complementary. The measure of the larger angle is ten more than four times the measure of the smaller angle. Find the measures of both angles.
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