3 years ago

Which is the value of y in the solution to the system of equations 12x - 4y = 8 and - 3x + 2y = 12 ?

Mathematics

1 answer:

bearhunter [10]3 years ago

4 0

Answer:

I'm sorry this makes no sense

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Express your answer in scientific notation.

melomori [17]

It’s 1.77 times 10to the 6th

3 0

3 years ago

Consider a set of 7500 scores on a national test whose score is known to be distributed normally with a mean of 510 and a standa

german

$\mathbb P(X>600)=\mathbb P\left(\dfrac{X-510}{85}>\dfrac{600-510}{85}\right)=\mathbb P(Z>1.059)\approx0.145$

So approximately 14.5% of the scores are higher than 600. This means in a sample of 7500, one could expect to see $0.145\times7500\approx10.86$ scores above 600.