All categories

2 years ago

Which set of ordered pairs represent a function

Mathematics

1 answer:

spayn [35]2 years ago

3 0

The 3rd set, no x or y numbers are repeated.

You might be interested in

Distance that sound travels through air d varies directly as time t, and d=1,675 ft when t=5 seconds, find t when d=5025ft

Marysya12 [62]

Divide 5025 by 1675 then whatever you get multiply it by 5 that will get you t when d is 5025

5 0

3 years ago

(3^(5))/(3^(-6)) Plus steps.

marissa [1.9K]

4 0

3 years ago

Read 2 more answers

There are 9,481 eligible voters in a precinct. 500 were selected at random and asked to indicate whether they planned to vote fo

maria [59]

Answer:

The confidence limits for the proportion that plan to vote for the Democratic incumbent are 0.725 and 0.775.

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 $1 - \frac{\alpha}{2}$ .

Of the 500 surveyed, 350 said they were going to vote for the Democratic incumbent.

This means that $n = 500, \pi = \frac{350}{500} = 0.75$

80% confidence level

So $\alpha = 0.2$ , z is the value of Z that has a pvalue of $1 - \frac{0.2}{2} = 0.9$ , so $Z = 1.28$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.75 - 1.28\sqrt{\frac{0.75*0.25}{500}} = 0.725$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.75 + 1.28\sqrt{\frac{0.75*0.25}{500}} = 0.775$

The confidence limits for the proportion that plan to vote for the Democratic incumbent are 0.725 and 0.775.

8 0

3 years ago

Help please! 15 points!

Ivan

It’s 3!! I checked on a calculator :)

5 0

3 years ago

What statement complete the proof below given 3x+ 7=x-5

Advocard [28]

Proof: x=-6

llllllllllllllllllllll

4 0

3 years ago

Read 2 more answers