Ask question

Ask question

All categories

3 years ago

11

HELP !!! What is the center of the circle? A. (-2,0) B. (3,-1) C. (-3,4) D. (2,-5)

1 answer:

vovangra [49]3 years ago

8 0

Answer:

3, -1

Step-by-step explanation:

because that is the point that is at the center :)

You might be interested in

Calcula el área de la siguiente figura

andreyandreev [35.5K]

Answer:

272.5 m²

Step-by-step explanation:

1/2x4x9=18

(9+18)/2=13.5. 13.5x11=148.5

(18+14)/2=16. 16x7=112

12+148.5+112= 272.5

5 0

3 years ago

Which of the following distinctions does Russia enjoy?

kap26 [50]

Answer:

A distinctions does Russia enjoy is explained below in details.

Step-by-step explanation:

About 11 percent of Russia is tundra, marshy plain, a treeless The tundra is Russia's northernmost zone.
Russia is the world's largest nation by landmass, It comprises nine separate time zones and shares land boundaries with 14 neighboring nations.
Russia a federative, democratic, law-based country with a republican model of government. State authority is distributed among the legislative, executive, and judicial divisions.

3 0

3 years ago

Is this congruent or not congruent? And is this

Alex_Xolod [135]

It's congruent by AAS

8 0

3 years ago

Read 2 more answers

PLEASE HELP ill Mark BRAINLIEST!

alisha [4.7K]

Answer:

im im give the anser in a sec

Step-by-step explanation:

4 0

4 years ago

The accompanying frequency distribution represents the square footage of a random sample of 500 houses that are owner occupied y

ioda

Answer:

$\bar X = \frac{\sum x_i f_i}{n} = \frac{1220750}{500}=2441.5$

$s^2= \frac{3408029125 -\frac{(1220750)^2}{500}}{500-1} =856849.7$

$s= \sqrt{856849.7}=925.662$

Step-by-step explanation:

For this case we can create the following table

Interval Frequency (f) Midpoint(xi) xi *f xi^2* f

0-499 9 249.5 2245.5 560252.3

500-999 13 749.5 9743.5 7302753

1000-1499 33 1249.5 41233.5 51521258.25

1500-1999 115 1749.5 201193.5 361986278.8

2000-2499 125 2249.5 281187.5 632531281.3

2500-2999 81 2749.5 222709.5 612339770.3

3000-3499 47 3249.5 152726.5 496284761.8

3500-3999 45 3749.5 168727.5 632643761.3

4000-4499 22 4249.5 93489 397281505.5

4500-4999 10 4749.5 47495 225577502.5

Total 500 1220750 3408029125

$\sum f_i = 500 , \sum x_i f_i = 1220750, \sum x^2_i f_i = 3408029125$

For this case we can calculate the sample mean with this formula:

$\bar X = \frac{\sum x_i f_i}{n} = \frac{1220750}{500}=2441.5$

And for the sample variance we can use the following formula:

$s^2= \frac{\sum x^2_i f_i - \frac{(\sum x_i f_i)^2}{n}}{n-1}$

And if we replace we got:

$s^2= \frac{3408029125 -\frac{(1220750)^2}{500}}{500-1} =856849.7$

And the deviation is just the square root of the sample variance and for this case is:

$s= \sqrt{856849.7}=925.662$

4 0

3 years ago