Is it Y-axis or X-axis I need by 11:30

Mathematics

2 answers:

Savatey [412]3 years ago

8 0

I believe it is y axis that it is reflected by

taurus [48]3 years ago

7 0

Answer:

Y axis is vertical the one running up and down in the middle x axis is the one going side to side

Step-by-step explanation:

Whatever it is your asking I hope this helps

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PLZ HELP 100PTS!!!!!!!!!!!

Sonja [21]

Answer:

GJK

Step-by-step explanation:

An inscribed angle is an angle formed by two line segments in a circle that intersect on the circle. The line segments must touch the circle at two points The angle must be on the circle itself.

GIH is not inscribed because I is in the center of the circle not on the circle

GJK is an inscribed angle GJ and JK touch the circle at two point and are inside the circle.

IGJ IG does not touch the circle at two points

JKL KL is outside the circle

8 0

3 years ago

Read 2 more answers

In an examination of purchasing patterns of shoppers, a sample of 16 shoppers revealed that they spent, on average, $54 per hour

Lesechka [4]

Answer:

$54-1.64\frac{21}{\sqrt{16}}=45.39$

$54 +1.64\frac{21}{\sqrt{16}}=62.61$

So on this case the 90% confidence interval would be given by (45.39;62.61)

Step-by-step explanation:

Previous concepts

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

$\bar X=54$ represent the sample mean

$\mu$ population mean (variable of interest)

$\sigma=21$ represent the sample standard deviation

n=16 represent the sample size

Solution to the problem

The confidence interval for the mean is given by the following formula:

$\bar X \pm z_{\alpha/2}\frac{\sigma}{\sqrt{n}}$ (1)

Since the Confidence is 0.90 or 90%, the value of $\alpha=1-0.9=0.1$ and $\alpha/2 =0.05$ , and we can use excel, a calculator or a table to find the critical value. The excel command would be: "=-NORM.INV(0.05,0,1)".And we see that $z_{\alpha/2}=1.64$