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Chapter 8: Q 602. (page 1028)
Lisa takes 3 hours to mow the lawn while her cousin, Barb, takes 2 hours. How long will it take them working together?
Lisa and Barb will take hours to mow the lawn together.
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Work The length of time it takes for two people for perform the same task if they work together can be found by evaluating the formula . If Tom can paint the den in x = 45 minutes and his brother Bobby can paint it in y = 60 minutes, how many minutes will it take them if they work together?
The area of a circle varies directly as the square of the radius. A circular pizza with a radius of 6 inches has an area of 113.04 square inches.
鈸� Write the equation that relates the area to the radius.
鈸� What is the area of a pizza with a radius of 9 inches?
Simplify:
Leeson can proofread a newspaper copy in hours. If Ryan helps, they can do the job in hours. How long would it take for Ryan to do his job alone?
On the map, Seattle, Portland, and Boise form a triangle whose sides are shown in the figure below. If the actual
distance from Seattle to Boise is 400 miles, find the distance from Seattle to Portland.
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