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slega [8]
3 years ago
8

One number is four times another number. The sum of their reciprocals is 1/4 . What are the numbers?

Mathematics
1 answer:
alexgriva [62]3 years ago
4 0

Answer:

x=2, y=8

Step-by-step explanation:

Set up the equations:

4x=y

1/4x+1/y=1/4

---------------------

1/y+1/y=1/4

2/y=1/4

cross product

y*1=2*4

y=8

4x=8

x=8/4=2

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Answer:

A and D

Step-by-step explanation:

Since tangent is opposite/adjacent,

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Tan40 = x/3.8

Multiply both sides by 3.8

3.8tan40 = x, Option A

And then, angle E is 50 degrees

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Step-by-step explanation:

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