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Section 9.5

Solve each of the equations. Be sure to check your solutions.

Exercise 8

Exercise 14

Exercise 30

Section 9.6

Exercise 15

Geometry. A homeowner wishes to insulate her attic with fiberglass insulation to conserve energy. The insulation comes in 40-cm wide rolls that are cut to fit between the rafters in the attic. If the roof is 6 m from peak to eave and the attic space is 2 m high at the peak, how long does each of the pieces of insulation need to be? Round to the nearest tenth.

Exercise 16

Geometry. For the home described in exercise 15, if the roof is 7 m from the peak to eave and the attic space is 3 m high at the peak, how long does each of the pieces of insulation need to be? Round to the nearest tenth.

Exercise 20

Find the distance between each pair of points.

(-3, 0) and (4, 0)