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Inessa [10]
3 years ago
10

Please Help!............................

Mathematics
1 answer:
ryzh [129]3 years ago
6 0
Ok. a function is something that if you draw a vertical line, it should only touch one point on the line.the ones on the left both touch twice. the bottom right has infinite points touching. the top right has only one point touching a vertical line at any time, so it's a function. hope this helps

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What is the area of the composite figure?<br><br> D) 48 cm
arlik [135]

Answer:

The answer is c

Step-by-step explanation:

C.88cm

5 0
2 years ago
I only need help with the second part of this question. please can you help?
matrenka [14]

13,822 to one significant figure is 10,000

623 to one significant figure is 600

14 to one significant figure is 10

10,000 times 600 = 6,000,000

6,000,000/10 = 600,000

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3 years ago
An amusement park would like to determine if they want to add in a new roller coaster. In order to decide whether or not they sh
Rzqust [24]

Using the z-distribution, it is found that the 90% confidence interval is given by: (0.6350, 0.6984).

<h3>What is a confidence interval of proportions?</h3>

A confidence interval of proportions is given by:

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which:

  • \pi is the sample proportion.
  • z is the critical value.
  • n is the sample size.

In this problem, we have a 90% confidence level, hence\alpha = 0.9, z is the value of Z that has a p-value of \frac{1+0.9}{2} = 0.95, so the critical value is z = 1.645.

The sample size and the estimate are given by:

n = 600, \pi = \frac{400}{600} = 0.6667

Hence, the bounds of the interval are given by:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6667 - 1.645\sqrt{\frac{0.6667(0.3333)}{600}} = 0.6350

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.6667 + 1.645\sqrt{\frac{0.6667(0.3333)}{600}} = 0.6984

The 90% confidence interval is given by: (0.6350, 0.6984).

More can be learned about the z-distribution at brainly.com/question/25890103

#SPJ1

5 0
2 years ago
ABCD∼EFGH
DerKrebs [107]
45/75 = 30/x

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EF = 50 in.
6 0
3 years ago
Read 2 more answers
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Think u have to find the area of the pan which is 486 inches
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