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4 years ago

When you draw a circle using the 2-point option, the two points you select define the circle's ____?

Mathematics

1 answer:

jok3333 [9.3K]4 years ago

8 0

I'm pretty sure it's diameter.

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The caffeine content (in mg) was examined for a random sample of 50 cups of black coffee dispensed by a new machine. The mean an

Genrish500 [490]

Answer:

We are 98% confident interval for the mean caffeine content for cups dispensed by the machine between 107.66 and 112.34 mg .

Step-by-step explanation:

Given -

The sample size is large then we can use central limit theorem

n = 50 ,

Standard deviation $(\sigma)$ = 7.1

Mean $\overline{(y)}$ = 110

$\alpha =$ 1 - confidence interval = 1 - .98 = .02

$z_{\frac{\alpha}{2}}$ = 2.33

98% confidence interval for the mean caffeine content for cups dispensed by the machine = $\overline{(y)}\pm z_{\frac{\alpha}{2}}\frac{\sigma}\sqrt{n}$

= $110\pm z_{.01}\frac{7.1}\sqrt{50}$

= $110\pm 2.33\frac{7.1}\sqrt{50}$

First we take + sign

$110 + 2.33\frac{7.1}\sqrt{50}$ = 112.34

now we take - sign

$110 - 2.33\frac{7.1}\sqrt{50}$ = 107.66

We are 98% confident interval for the mean caffeine content for cups dispensed by the machine between 107.66 and 112.34 .

5 0

4 years ago

max is making a rectangular garden that is 5 feet less than twice its width. If the perimeter of the garden is 80 feet, what wil

djverab [1.8K]

L=2w-5

2(l+w)=80
l+w=40
2w-5+w=40
3w=45
w=15 feet
l=25 feet. As a result, the width is 15 feet and length is 25 feet. Hope it help!

7 0

3 years ago

Read 2 more answers

The function fx) is graphed below.

Shtirlitz [24]

Answer:

D. 2

Step-by-step explanation:

following the graph you can see that -2 on the x line comes across to 2 in y line

3 0

3 years ago

Please help and explain i will mark brainliesttt!

Art [367]

JIH= QRP
they’re the same shape.

4 0

3 years ago

What is the basic ratio for 25:40.

Alexxandr [17]

25/40= .625
.625= 5/8

8 0

3 years ago