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yanalaym [24]
2 years ago
7

PLEASE HELP ME WITH THIS

Mathematics
1 answer:
Elenna [48]2 years ago
6 0

9514 1404 393

Answer:

  $0.50/lb

Step-by-step explanation:

The increase in cost is $40-25 = $15 for an increase in weight of 50-20 = 30 lb. That makes the cost per pound be ...

  cost/pounds = $15/(30 lb) = $0.50/lb

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Answer:

1 3/7 quarts should be drained off and replaced with pure antifreeze.

1 3/7 ≈ 1.4286

Current amount of antifreeze in quarts is -

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Let the amount drained of and replaced with antifreeze be x-

The amount left after draining off is 10 − x.

The amount of antifreeze  is 30/ 100 (10−x).

30/100(10-x)+x=4

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check;

10- 1 3/7 = 8 4/7

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3 years ago
Simplify : 4y^2+12y-40\y^2+2y-8
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