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larisa86 [58]
3 years ago
13

Geometry: Area... triangles and squares

Mathematics
1 answer:
vodka [1.7K]3 years ago
5 0

Answer:

The answer is A

Step-by-step explanation:

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Simplify the expression.<br> 3 - 4 +7 - 4
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Please help me solve this problem?
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The problem statement gives a relation between the amount removed from one bag and the amount removed from the other. It asks for the amount remaining in each bag. Thus, there are several choices for variables in this problem, some choices resulting in more complicated equations than others.

Let's do it this way: let x represent the amount remaining in bag 1. Then the amount removed from bag 1 is (100-x). The amount remaining in bag 2 is 2x, so the amount removed from that bag is (100-2x). The problem statement tells us the relationship between amounts removed:

... (100 -x) = 3(100 -2x)

... 100 -x -3(100 -2x) = 0 . . . . . . subtract the right side

... 5x -200 = 0 . . . . . . . . . . . . . . eliminate parentheses and collect terms

... x -40 = 0 . . . . . . . . . . . . . . . . .divide by 5

... x = 40 . . . . . . . . . . . . . . . . . . . add 40

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  • 80 kg is left in the second bag

_____

<u>Check</u>

The amount removed from the first bag is 60 kg. The amount removed from the second is 20 kg. The amount removed from the first bag is 3 times the amount removed from the second bag, as described.


4 0
3 years ago
Explain how comparing 645 and 738 is different
DerKrebs [107]
Well both the hundred places are different so u would know that comparing it would be that the 738 is bigger than 645
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3 years ago
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Answer:

y=-2x-3

the line is going downwards which makes the slop a negative value

Step-by-step explanation:

5 0
2 years ago
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