One number is twice another. The sum of their reciprocals is 9/2. Find two numbers

Mathematics

1 answer:

irina [24]4 years ago

4 0

Answer:

x=2y

x+y=9/2

2y+y=9/2

3y=9/2

y=3/2

x=3

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<u>Step-by-step explanation:</u>

Here we have , A manufacturer of bolts has a quality-control policy that requires it to destroy any bolts that are more than 2 standard deviations from the mean. The quality-control engineer knows that the bolts coming off the assembly line have mean length of 13 cm with a standard deviation of 0.10 cm. We need to find For what lengths will a bolt be destroyed .Let's find out:

A manufacturer of bolts has a quality control policy that requires it destroy any bolts that are more than 2 standard deviations from the mean.

mean length= $13 cm$