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cestrela7 [59]
3 years ago
15

Which set of statements about the angles is true?

Mathematics
1 answer:
gogolik [260]3 years ago
3 0

Answer:

3

Step-by-step explanation:

3

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What is the initial value of the following equation? <br>y = 4(9)​
Vinil7 [7]

Answer:

y = 36

Step-by-step explanation:

4(9) = 4 x 9 = 36

5 0
3 years ago
Simplify the expression to a polynomial in standard form:<br> a<br> (-x^2-2x-2)(x^2+x-3)
antiseptic1488 [7]
Answer: -x^4 - 3x^3 - x^2 + 4x + 6

Explanation
7 0
3 years ago
The area of a square boxing ring is 484 (feet squared). What is the perimeter of the boxing ring?
VARVARA [1.3K]
88 feet

<span>√</span>484=22
Perimeter is l+l+l+l
22+22+22+22=88
7 0
3 years ago
Read 2 more answers
There are big spenders among University of Alabama football season ticket holders. This data set Roll Tide!! shows the dollar am
Bas_tet [7]

Using the z-distribution, as we have a proportion, the 95% confidence interval is (0.2316, 0.3112).

<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 95% confidence level, hence\alpha = 0.95, z is the value of Z that has a p-value of \frac{1+0.95}{2} = 0.975, so the critical value is z = 1.96.

We also consider that 130 out of the 479 season ticket holders spent $1000 or more at the previous two home football games, hence:

n = 479, \pi = \frac{130}{479} = 0.2714

Hence the bounds of the interval are found as follows:

\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2714 - 1.96\sqrt{\frac{0.2714(0.7286)}{479}} = 0.2316

\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.2714 + 1.96\sqrt{\frac{0.2714(0.7286)}{479}} = 0.3112

The 95% confidence interval is (0.2316, 0.3112).

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

7 0
2 years ago
Mr. Peterson sold a parcel of land and decided to share half of the amount he got among his three children Jane, Peter and marth
aliya0001 [1]

Answer:

60,000

Step-by-step explanation:

Jane-2000

Peter-ratio of 5=25000

Marta-ratio of 7=35000

25000+35000

60000

5 0
3 years ago
Read 2 more answers
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