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3 years ago

Name the relationship, complementary, linear pair, vertical, or adjacent

1 answer:

3 0

<span>Answer:
When two angles add up to 90</span>°, it is complementary.
Linear pair<span> of angles are formed when two lines intersect.
</span><span>Vertical is each pairs of opposite angles made by two intersecting lines.
</span>Adjacent angles are angles that are next to or neighboring each other.

Hope this helps!

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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

A company mixes two kinds of cleansers to get a blend they sell for 59 cents a liter. One of the cleansers costs 50 cents per li

Svetllana [295]

Answer:

I actually don't know I am comfused

5 0

3 years ago

In a shipment of airplane parts, 5% are known to be defective. If 21 parts are found to be defective, how many parts are in the

horrorfan [7]

We can use ratios and the cross-multiply-divide to find this.

The ratio 21:5 is avaliable via the question. We then need to compare that to the ratio x:100, the 100 being the percent and the x being the number of airplane parts.

21/5 = x/100

We can then solve for x to find the number of airplane parts. First we multiply by 100 on both sides to get 2100/5 = x. Therefore x = 420 and there are 420 airplane parts.

7 0

3 years ago

Solve for x x squared plus 4X minus 21 equals 0

suter [353]

Answer:

x = -7 and x = 3

Step-by-step explanation:

x² + 4x - 21 = 0 factors as follows: (x + 7)(x - 3) = 0.

Then x = -7 and x = 3.

3 0

3 years ago

Read 2 more answers

What is the quotient of 4.38 and 0.5

barxatty [35]

4.38 / 0.5 = 8.76

Hope it helps :D

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3 years ago