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Oduvanchick [21]
2 years ago
15

Please Help me solve this (Who ever answers correctly will get brainlest)

Mathematics
2 answers:
lana [24]2 years ago
8 0

Answer:

1.52

Step-by-step explanation:

Every cenimeter is 1/100 meters.

so if you do the math it'll turn out to be 1.52 meters

o-na [289]2 years ago
5 0

Answer:

1.52

……………………………………………………

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The answer is A.  X represents adults, Y represents youth.
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The ratio of the perimeters of two similar triangles is 4:7. What is the area of each of these triangles if the sum of their are
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  16 cm^2 and 49 cm^2

Step-by-step explanation:

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  (4/7)^2 = 16/49

The sum of these "ratio units" is 16 +49 = 65. The sum of triangle areas is 65 cm^2, so each "ratio unit" must stand for 1 cm^2 of area. That is, the triangles must have areas of ...

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What if I can't answer the questions you give me​
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A chemist has two alloys, one of which is 15% gold and 20% lead and the other which is 30% gold and 50% lead. How many grams of
vlabodo [156]

Answer: 490 grams of the first alloy should be used.

30 grams of the second alloy should be used.

Step-by-step explanation:

Let x represent the weight of the first alloy in grams that should be used.

Let y represent the weight of the second alloy in grams that should be used.

A chemist has two alloys, one of which is 15% gold and 20% lead. This means that the amount of gold and lead in the first alloy is

0.15x and 0.2x

The second alloy contains 30% gold and 50% lead. This means that the amount of gold and lead in the second alloy is

0.3y and 0.5y

If the alloy to be made contains 82.5 g of gold, it means that

0.15x + 0.3y = 82.5 - - - - - - - - - - - -1

The second alloy would also contain 113 g of lead. This means that

0.2x + 0.5y = 113 - - - - - - - - - - - - -2

Multiplying equation 1 by 0.2 and equation 2 by 0.15, it becomes

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x = 490

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3 years ago
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