3 years ago

I need help anyone?

Mathematics

1 answer:

Arturiano [62]3 years ago

4 0

I got 9030.75 hope it helps

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In class A, John got 85 for his first test John's class mean was 75 and standard deviation was 5. In class B, Kathy got 80 in he

ivanzaharov [21]

Answer:

b. Kathy

Step-by-step explanation:

We compare each of their score by how far away from the mean when in term of the standard deviation. Using the following formula

$\frac{x - \mu}{\sigma}$

For John he is (85 - 75)/5 = 2.

For Kathy she is (80 - 50)/10 = 3.

Since Kathy is 3 standard deviation better than her class' average, while John is only 2's. We conclude that Kathy did better.

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y+3=1/4x
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minus 12 both sides
-x+4y=-12
(I like x to be positive so)
times both sides by -1
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15. Jiovanni is looking in to two different companies that offer study guides for math exams.Test Prep 101 charges a $5 flat fee

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Answer:

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Step-by-step explanation:

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