Ask question

Ask question

All categories

3 years ago

10

Dan must do homework for 1/2 of an hour and clean his room for 1/3 of an hour before he can play. What faction of an hour must D

an do homework and clean before he can play

1 answer:

zloy xaker [14]3 years ago

4 0

Answer:

50 minutes

Step-by-step explanation:

1/2 hour = 30 minutes

1/3 hour = 20 minutes

30 + 20 = 50 minutes

You might be interested in

Researchers are studying the distribution of subscribers to a certain streaming service in different populations. From a random

Katen [24]

Answer:

$CI = (0.17 - 0.27)\± 1.65\sqrt{\frac{(0.17)*(0.83) + (0.27)*(0.73)}{200}}$

Step-by-step explanation:

Given

$n = 200$

$x_1 = 34$ -- City C

$x_2 = 54$ --- City K

Required

Determine the 90% confidence interval

This is calculated using:

$CI = \bar x \± z\frac{\sigma}{\sqrt n}$

Calculating $\bar x$

$\bar x = \bar x_1 - \bar x_2$

$\bar x = \frac{x_1}{n} - \frac{x_2}{n}$

$\bar x = \frac{34}{200} - \frac{54}{200}$

$\bar x = 0.17 - 0.27$

For a 90% confidence level, the z-score is 1.65. So:

$z = 1.65$

Calculating the standard deviation $\sigma$

$\sigma = \sqrt{(\bar x_1)*(1 - \bar x_1) + (\bar x_2)*(1 - \bar x_2) }$

So:

$\sigma = \sqrt{(0.17)*(1 - 0.17) + (0.27)*(1 - 0.27) }$

$\sigma = \sqrt{(0.17)*(0.83) + (0.27)*(0.73)}$

So:

$CI = (0.17 - 0.27)\± 1.65\frac{\sqrt{(0.17)*(0.83) + (0.27)*(0.73)}}{\sqrt {200}}$

$CI = (0.17 - 0.27)\± 1.65\sqrt{\frac{(0.17)*(0.83) + (0.27)*(0.73)}{200}}$

7 0

3 years ago

OMG HELPP MEEE ITS DUE LIKE RN

monitta

Answer

A 1 3/8

Step-by-step explanation:

Just subtract bro

7 0

3 years ago

Read 2 more answers

What is the common difference between successive terms in the sequence?

anzhelika [568]

Look at each term. How does the next one change? what is added?

The answer is 6, because there is an increase of 6 for each term

7 0

3 years ago

Read 2 more answers

If a temperature in degrees Celsius is given as C, finding the sum of 1.8 times C and 32 gives the temperature in degrees Fahren

Yuki888 [10]

Answer:

hsuvsjvBcsjfbdkchdkksfsnadeolataogzfdkgcjb

6 0

3 years ago

What is the formula for the radius of a circle?

gizmo_the_mogwai [7]

The radius is half the diameter, so the formula would be r=d divided by 2

7 0

4 years ago

Read 2 more answers