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1 year ago

Choose the inequality that represents the following graph.HELP HELP HELP

Mathematics

1 answer:

Wewaii [24]1 year ago

4 0

Solution:

It should be noted:

If the starting point of the inequality is half shaded, the sign will be < or >.
If the starting point of the inequality is fully shaded, the sign will be ≤ or ≥.

We can tell that:

The inequality will either have an < or > sign.
The blue line tells us that the value of x must be greater than -1.

This clearly tells us that the inequality is x > -1

In conclusion:

Option C is correct.

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When Aria commutes to work, the amount of time it takes her to arrive is normally distributed with a mean of 28 minutes and a st

MrRa [10]

Answer:

Her commute would be between 32 and 35 minutes 33 times.

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:

$\mu = 28, \sigma = 4.5$

Proportion of days in which the commute is between 32 and 35 minutes:

This is the pvalue of Z when X = 35 subtracted by the pvalue of Z when X = 32.

X = 35

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

$Z = \frac{35 - 28}{4.5}$

$Z = 1.555$

$Z = 1.555$ has a pvalue of 0.94.

X = 32

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

$Z = \frac{32 - 28}{4.5}$

$Z = 0.89$

$Z = 0.89$ has a pvalue of 0.8133.

0.94 - 0.8133 = 0.1267

Out of 262 days:

Each day, 0.1267 probability

0.1267*262 = 33

Her commute would be between 32 and 35 minutes 33 times.

6 0

3 years ago

Brian receives supplies for his pretzel business weekly. he usually works concession at three events a week and averages sales o

Kisachek [45]

The correct answer is a) $382.50.

He works 3 events and averages 150 pretzels; this is 3(150) = 450 pretzels. Since his cost is $0.85 each, we have
450(0.85) = 382.50

8 0

3 years ago

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Please match the following 3 terms to their definitions.

yan [13]

Answer:

See attached

Step-by-step explanation:

Refer to picture

8 0

2 years ago

I really don’t understand this and just need an explanation of how to do it.

sertanlavr [38]

$\bf ~\hspace{12em}\left( \cfrac{2n}{-3n\cdot -2n^2} \right)^4
\\\\[-0.35em]
\rule{34em}{0.25pt}\\\\
\cfrac{2n}{-3n\cdot -2n^2}\implies \cfrac{1}{-3n}\cdot \cfrac{2n}{-2n^2}\implies \cfrac{1}{-3n}\cdot \cfrac{2n}{2n\cdot -n}\implies \cfrac{1}{-3n}\cdot \cfrac{2n}{2n}\cdot \cfrac{1}{-n}$

$\bf \cfrac{1}{-3n}\cdot \boxed{1}\cdot \cfrac{1}{-n}\implies \cfrac{1}{-3n\cdot -n}\implies \cfrac{1}{3n^2}
\\\\[-0.35em]
\rule{34em}{0.25pt}\\\\
\left( \cfrac{2n}{-3n\cdot -2n^2} \right)^4\implies \left( \cfrac{1}{3n^2} \right)^4\implies \stackrel{\textit{distributing the exponent}}{\cfrac{1^4}{3^4n^{2\cdot 4}}}\implies \cfrac{1}{81n^8}$

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2 years ago

Which graph shows a linear function. A) B) C) D)

Hitman42 [59]

The First one (A) because it’s a straight line

3 0

3 years ago

Read 2 more answers