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2 years ago

Four adult alligators weigh 1,812 kilograms. If each alligator weighs the same, how many kilograms does one alligator weigh?

1 answer:

3 0

Each alligator would weigh 453 kilograms. I got this answer by taking 1812 and dividing it by 4 to get my answer. Hope this helps! :D

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Please help with right answers xxoxo

Olegator [25]

It is the reflection across the y axis because if you move across the y axis it will make everything opposite because you are reflecting it

8 0

3 years ago

A researcher wants to estimate the percentage of all adults that have used the Internet to seek pre-purchase information in the

lara31 [8.8K]

Answer:

The sample size is 1875.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

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

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

The margin of error is:

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

Sampling error of 0.03.

This means that $M = 0.03$

99.74% confidence level

So $\alpha = 0.0026$ , z is the value of Z that has a pvalue of $1 - \frac{0.0026}{2} = 0.9987$ , so $Z = 3$ .

25% of all adults had used the Internet for such a purpose

This means that $\pi = 0.25$

What is the sample size

The sample size is n. So

$M = z\sqrt{\frac{\pi(1-\pi)}{n}}$

$0.03 = 3\sqrt{\frac{0.25*0.75}{n}}$

$0.03\sqrt{n} = 3\sqrt{0.25*0.75}$

Simplifying by 0.03 both sides

$\sqrt{n} = 100\sqrt{0.25*0.75}$

$(\sqrt{n})^2 = (100\sqrt{0.25*0.75})^2$

$n = 1875$

The sample size is 1875.

7 0

3 years ago

Solve the problem by writing an inequality. A club decides to sell T-shirts for $12 as a fund-raiser. It costs $20 plus $8 per T

romanna [79]

In order to make a profit of $100, the fundraiser has to make and sell at least 30 t-shirts. (8 * 30) + 20 = 260. 12 * 30 = 360. 360 - 260 = 100.

8 0

2 years ago

Read 2 more answers

when you rotate something 180 degrees in a coordinate plane the values become (-x, y). what if y was already negative?

malfutka [58]

I think it would become (-x -y)

3 0

2 years ago

David is standing 500 feet away from the base of a cell phone tower. The angle of elevation from his eyes to the top of the towe

Ksivusya [100]

Answer:

$h = 2358.315\,ft$

Step-by-step explanation:

The trigonometric figure is presented below. The height of the tower is found by applying trigonometric functions:

$h = 6\,ft + 500\,ft \cdot \tan 78^{\textdegree}$

$h = 2358.315\,ft$

8 0

3 years ago