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2 years ago

What is the equation of the line that passes through the point (−3,5) and has a slope of -2?

Mathematics

1 answer:

GenaCL600 [577]2 years ago

3 0

Answer:

y = -2x-1

Step-by-step explanation:

y = -2x+b

5 = -2(-3)+b

5 = 6+b

-1 = b

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Step-by-step explanation:

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Read 2 more answers

The SAT scores have an average of 1200 with a standard deviation of 60. A sample of 36 scores is selected. a) What is the probab

erastova [34]

Answer:

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Step-by-step explanation:

Given that:

The SAT scores have an average of 1200

with a standard deviation of 60

also; a sample of 36 scores is selected

The objective is to determine the probability that the sample mean will be larger than 1224

Assuming X to be the random variable that represents the SAT score of each student.

This implies that ;

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$P(\overline X > 1224) = P(Z > \dfrac{24 }{\dfrac{60}{6} })$

$P(\overline X > 1224) = P(Z > \dfrac{24 }{10} })$

$P(\overline X > 1224) = P(Z > 2.4 })$

$P(\overline X > 1224) =1 - P(Z \leq 2.4 })$

From Excel Table ; Using the formula (=NORMDIST(2.4))

P(\overline X > 1224) = 1 - 0.9918

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