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Solnce55 [7]
4 years ago
8

Please do a and b im really confused

Mathematics
1 answer:
MrRa [10]4 years ago
7 0

a) 57.10 mi/ps b)  (57.10,1),(114.20,2), and (171.30,3);

A) The constant rate of change in mi/ps is 57.10, since that is what is being added every time.

B) The coordinate points for the graph (time=x,distance=y) would be (57.10,1),(114.20,2), and (171.30,3). the x is horizontal distance, the y is vertical distance.

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true

Step-by-step explanation:

because the expression shown is a monomial we simply add the degrees of each term

4 + 2 + 3 = 9

5x4y2z3 indeed has a degree of 9

Note: if the terms were being added we take the highest degree and that is the degree of the expression.

ex. 5x^4 + y^2 + z^3 would have a degree of 4

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Suppose that prices of a certain model of new homes are normally distributed with a mean of $150,000. Use the 68-95-99.7 rule to
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Answer:

C. 47.5%

Step-by-step explanation:

The  summary of the given statistics include:

mean =150000

standard deviation: 1200

The  objective is to use tributed with a mean of $150,000. Use the 68-95-99.7 rule to find the percentage of buyers who paid: between $150,000 and $152,400

The z score formula can be use to calculate the percentage of the buyer who paid.

z = \dfrac{X - \mu}{\sigma}

For the sample mean x = 150000

z = \dfrac{150000 - 150000}{1200}

z = \dfrac{0}{1200}

z = 0

For the sample mean x = 152400

z = \dfrac{152400 - 150000}{1200}

z = \dfrac{2400 }{1200}

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From the standard normal distribution tables

P(150000 < X < 152400) = P(0 < z < 2 )

P(150000 < X < 152400) =P(z<2) -P(z<0)

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