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For Scott Due Friday August...

For Scott Due Friday August 22nd 2008

6.7

Pg. 442-445

Solve. Don’t forget to check.

8. 1 or x= 1 over 8 – 3 over 5

16. 4 over x = 5 over x – 1 over 2

30. x+7 over 8x-5 = 2 over 3

6.8

Pg.455-461

4. Raking. Zoe can rake her yard in 4 hrs. Steffi does the same job in 3 hrs. How long would it take the two of them, working together, to rake the yard?

22. Boat speed. Tory and Emilio’s motorboats bother travel at the same speed. Troy pilots her boat 40 km before docking. Emilio continues for another 2 hr, traveling a total of 100 km before docking. How long did it take Tory to navigate the 40 km?

34.

Find the ratio of the following. Simplify if possible.

Baking. In a potato recipe, the ratio of milk to flour is 3 over 13. If 5 cups of milk are used, how many cups off flour are used?

6.9

Pg. 469-472

14. Weight on Mars. The weight M of an object on Mars varies directly as its weight E on Earth. A person who is 95 lb on Earth weighs 38 lb on Mars. How much would q 100 lb person weigh on Mars?

34. y varies directly as x and inversely as z ,and y = 6 when x=3

42. Weight of an astronaut. The weight W of an object varies inversely as the square distance d from the center of the earth. At sea level (3978 mi from the center of earth), an astronaut weighs 220 lb. Find his weight when he is 200 mi above the surface of the earth and the spacecraft is not in motion.

6.7

Pg. 442-445

Solve. Don’t forget to check.

8. 1 or x= 1 over 8 – 3 over 5

16. 4 over x = 5 over x – 1 over 2

30. x+7 over 8x-5 = 2 over 3

6.8

Pg.455-461

4. Raking. Zoe can rake her yard in 4 hrs. Steffi does the same job in 3 hrs. How long would it take the two of them, working together, to rake the yard?

22. Boat speed. Tory and Emilio’s motorboats bother travel at the same speed. Troy pilots her boat 40 km before docking. Emilio continues for another 2 hr, traveling a total of 100 km before docking. How long did it take Tory to navigate the 40 km?

34.

Find the ratio of the following. Simplify if possible.

Baking. In a potato recipe, the ratio of milk to flour is 3 over 13. If 5 cups of milk are used, how many cups off flour are used?

6.9

Pg. 469-472

14. Weight on Mars. The weight M of an object on Mars varies directly as its weight E on Earth. A person who is 95 lb on Earth weighs 38 lb on Mars. How much would q 100 lb person weigh on Mars?

34. y varies directly as x and inversely as z ,and y = 6 when x=3

42. Weight of an astronaut. The weight W of an object varies inversely as the square distance d from the center of the earth. At sea level (3978 mi from the center of earth), an astronaut weighs 220 lb. Find his weight when he is 200 mi above the surface of the earth and the spacecraft is not in motion.

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