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Elden [556K]
2 years ago
12

Right triangle XYZ, with vertex _Y at (-3,0), is rotated clockwise 180° about the origin. Which of the following rotations is

Mathematics
1 answer:
kirill115 [55]2 years ago
8 0
U270 why because I said it is you’re welcome
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The city of Omaha decided to build a new parking garage in hopes of luring more people to the Old Market district.The city will
dimulka [17.4K]

Answer:

Given:

Mean, u = 135

Sample size, n = 42

Sample mean, x' = 126

Standard deviation = 16

Significance level = 0.05

1) The null and alternative hypotheses:

H0 : u = 135 (the revenue per day is $135)

H1 : u < 135 (the revenue per day is less than $135)

2) In this case, we have a left tailed test.

Let's use the formula:

= \frac{x' - u}{s/ \sqrt{n}} = \frac{126 - 135}{16 / \sqrt{42}} = -3.645

t = - 3.645

Critical value: at a significance level of 0.05, left tailed test,

tcritical = -1.683

We reject null hypothesis, H0, since t calculated, -3.645 is less than tcritical, -1.683.

3) Given, a = 0.05, df = 41, left tailed test,

t-value = 2.02

For the corresponding confidence interval, we have:

CI = (x' - \frac{t * \sigma}{\sqrt{n}}, x' + \frac{t * \sigma}{\sqrt{n}})

CI = (126 - \frac{2.02 * 16}{\sqrt{42}}, 126 + \frac{2.02 * 16}{\sqrt{42}})

CI = (121.014, 130.986)

4) Conclusion:

We reject the estimated potential revenue advised by the consultant, H0, as it is too high, because the t-calculated falls in rejection region(i.e, less than critical value), also the upper limit of the confidence interval is less than $135.

5 0
2 years ago
Four points are placed on a circle. How many segments will it take to connect each point to every other point?
allsm [11]
Well i think it is six
4 0
3 years ago
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Please answer FAST i need your help and when you put your answers put them like
djyliett [7]

Step-by-step explanation:

3.5

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-7.14

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6.5

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2 years ago
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-3.1 + s = -19.22 i need serious help with this!!!
olga nikolaevna [1]

Answer:

-16.12

Step-by-step explanation:

Move the -3.1 to the other side so the variable s is isolated. Then on the right side, you will have -19.22 + 3.1. That equals <u>-16.12.</u> That is your answer.

Hope this helped! Please mark me as brainliest!

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2 years ago
5. Olivia ate at the same restaurant four times. Each visit she ordered a salad and
Anastaziya [24]

Answer: The cost of the salad is $52.5per visitation but $210 after four visitations.

Step-by-step explanation: The total cost at the restaurant is $54, the tip is $1.50 we have to minus the tip from the total amount to get the cost of the salad.

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