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Nitella [24]
3 years ago
9

When x=8,y=20.find y when x=42.

Mathematics
2 answers:
tino4ka555 [31]3 years ago
6 0
What? I don't understand what you mean...
3241004551 [841]3 years ago
6 0
X=8     y=20
x=42    y=?
⇒ 42×20÷8=105 ⇒y=105 :))
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Answer below :)

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Hi there!

Question 4 - the answer will be 5. Since the scale factor is 5, we would (hypothetically) multiply the area by 5 to get the new area of XYZ, so area XYZ is 5 times the area of ABC.

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First we multiply 45 by 12 to find the amount in inches. This is 540. Now, we divide that by 6 to get 90. This is our scale factor in inches, but the answers only show the scale in feet, so we have to convert. Divide 90 by 12 to get 7.5.

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