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Chapter 3: Test exercise (page 120)
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Solve the equation. Check your solution.
Geometry Find the value of x for the given triangle, rectangle or square.
Perimeter = 32 units
Write the verbal sentence as an equation. Then solve the equation.
Three less than 11 times a number is equal to 9 plus 5 times the number.
Describe and correct the error in solving the equation
4x + 7 = x 鈥� 2
Duathlons A duathlon is an event that consists of running and biking. While training for a duathlon, you run and bike a total of 23 kilometers in 1.25 hours. You run at an average speed of 10 kilometers in 1.25 hours. You run at an average speed of 10 kilometers per hour and bike at an average speed of 24 kilometers per hour. Write and solve an equation to find the time you spend running and the time you spend biking.
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