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mrs_skeptik [129]
3 years ago
12

Every 100 tons of the earth's crust contain about 28 tons of silicon. What is the ratio of the weight of silicon to the weight o

f crust? of the weight if crust to the weight of silicon?
Mathematics
1 answer:
d1i1m1o1n [39]3 years ago
4 0
<h3>Answer:</h3>
  1. 28/100 = 7/25
  2. 100/28 = 25/7
<h3>Explanation:</h3>

The wording "the ratio of A to B" means A/B.

Here, "the ratio of the weight of silicon to the weight of crust" means ...

... (28 tons)/(100 tons)

Canceling common factors (and common units), this is ...

... 28/100 = 7/25

___

Then "the ratio of the weight of crust to the weight of silicon" means ...

... (100 tons)/(28 tons) = 100/28 = 25/7

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Solve for y in x+0.25y=1.5
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Y=-4x+6

Step-by-step explanation:

Step 1: Add -x to both sides.

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5 0
3 years ago
-4(4-x)=4/5(x+16) I need help
Dominik [7]

Answer:

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Step-by-step explanation:

−4(4−x)=4/5(x+16)

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−16+4x=4/5x+64/5

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4 0
3 years ago
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