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3 years ago

0 = -1.8y + 0.72. EXPLANATION

Mathematics

1 answer:

masha68 [24]3 years ago

3 0

Answer:

y= 0.4

Step-by-step explanation:

I am assuming that you are looking for the value of y.

0 = -1.8y + 0.72.

Isolate variable to one side.

1.8y=0.72

Divide by 1.8 so that the variable is by itself

y = 0.72/1.8

y=0.4

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3 years ago

Suppose the mean SAT verbal score is 525 with a standard deviation of 100, while the mean SAT math score is 575 with a standard

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Answer:

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Step-by-step explanation:

Normal variables

Normal variables have mean $\mu$ and standard deviation $\sigma$

When we add normal variables, the combined mean is the sum of both means, and the standard deviation is the square root of the sum of both variances. The distribution is still normal.

In this question:

Verbal: $\mu_{V} = 525, \sigma_{V} = 100$ .

Math: $\mu_{M} = 575, \sigma_{M} = 100$

Combined:

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