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2 years ago

PLEASE HELP Which ordered pair is a solution to the system of inequalities? y< 3x y< 5

Mathematics

1 answer:

dimaraw [331]2 years ago

5 0

Answer:

I am pretty sure that it is C

Step-by-step explanation:

A 1,3 so 3 < 3 no not true

x,y

B -12,50 50< -36 Also not true

x , y

C 9 , 4 4<27 Yes 4< 5 YEPPP

D 4,10 10<12 Yes 10<5 NOOPPPPPEEEE

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Step-by-step explanation:

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3 years ago

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2 years ago

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3 years ago

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3 years ago

The mean annual inflation rate in the United States over the past 98 years is 3.37% and has a standard deviation of approximatel

Ksenya-84 [330]

Answer:

38.59% probability that inflation rate will be below 1.9% in 2019

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 3.37, \sigma = 5$

If the annual inflation rate is normally distributed, what is the probability that inflation rate will be below 1.9% in 2019?

This is the pvalue of Z when X = 1.9. So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{1.9 - 3.37}{5}$

$Z = -0.29$

$Z = -0.29$ has a pvalue of 0.3859

38.59% probability that inflation rate will be below 1.9% in 2019

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3 years ago