2 years ago

Need help with these 2 questions! I will give brainliest (it’s X Y chart)

Mathematics

1 answer:

AURORKA [14]2 years ago

3 0

Answer:

High Hopes <3

Barry

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elixir [45]

Answer:

x=44

Step-by-step explanation:

33+103+x=180

136+x=180

x=44

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3 years ago

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Rectangle PQRS with vertices P(- 6, 9) , Q(3, 6); R(0, - 9) and S(- 9, - 6)

STatiana [176]

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multiply the original coordinate by 3 so its c

Step-by-step explanation:

multiply the original coordinate by 3

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2 years ago

You by 20 of your favorite songs from a website that charges $0.99 for each song. what is the cost of 20 songs?

maksim [4K]

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3 years ago

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20. Jane and Richard each painted about 1/5

Tatiana [17]

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I can't draw a picture but its possible cuz they painted ABOUT 1/5 of the bird house so Jane could have painted a bit more than 1/5 but it would still be about 1/5

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3 years ago

A major department store chain is interested in estimating the mean amount its credit card customers spent on their first visit

sergiy2304 [10]

Answer:

95% Confidence interval: (39.43, 61.58)

Step-by-step explanation:

We are given the following in the question:

Sample mean, $\bar{x}$ = $50.50

Sample size, n = 15

Alpha, α = 0.05

Sample standard deviation = 20

95% Confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 14 and}~\alpha_{0.05} = \pm 2.1447$

$=50.50 \pm 2.1447(\dfrac{20}{\sqrt{15}} ) \\\\= 50.50 \pm 11.0751 \\= (39.4249,61.5751)\\\approx (39.43, 61.58)$

95% Confidence interval: (39.43, 61.58)

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3 years ago