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3 years ago

In PQR, what is the m

Mathematics

1 answer:

Pie3 years ago

3 0

Answer:

105°

Step-by-step explanation:

(11x-5)+(6x+5)+x=180

18x=180

x=10°

m∠Q=11x-5=11*10-5=105°

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Central High School has 5 times as many desktop computers as laptops. The school

larisa [96]

Answer:

9000 seee

Step-by-step explanation:

Moy 2000y 50000

8 0

3 years ago

If sample variance is computed by dividing SS by df = n – 1, then the average value of the sample variances from all the possibl

boyakko [2]

Answer:

$s^2 = \frac{SS}{n-1}$

And if we take the average value of the sample variances from all the possible random samples we will get the population variance:

$\sigma =\frac{SS}{n}$

So then the best answer for this case would be:

The average value of the sample variances from all the possible random samples will be exactly the population variance

Step-by-step explanation:

For this case we can define the sum of squares with this formula:

$SS = \sum_{i=1}^n (X_i -\bar X)^2$

Where:

$\bar X =\frac{\sum_{i=1}^n X_i}{n}$

And we can find the sample variance with this formula:

$s^2 = \frac{SS}{n-1}$

And if we take the average value of the sample variances from all the possible random samples we will get the population variance:

$\sigma =\frac{SS}{n}$

So then the best answer for this case would be:

The average value of the sample variances from all the possible random samples will be exactly the population variance

6 0

4 years ago

Ms. Etienne deposited $450 into an account that paid 5% interest compounded annually. She did not make any

Alexus [3.1K]

Answer:

$603.04

Step-by-step explanation:

The Compound Amout formula is A = P(1 + r)^t, where:

P is the principal (initial deposit), r is the annual interest rate as a decimal fraction, and t is the time period in years.

In this particular case, the Compound Amount is:

A = ($450)(1 + 0. 05)^6 = ($450)(1.34) = $603.04

6 0

3 years ago

What's 10.08 rounded to the nearest one?

Ganezh [65]

Answer:

Step-by-step explanation:

3 0

3 years ago

A line passes through (1, -5) and (-3, 7).

siniylev [52]

Answer:

Slope-intercept form: y=-3x-2

Point-slope form: y+5=-3(x-1)

Step-by-step explanation:

Slope-intercept form is y=mx+b

Point-slope form is y-y1=m(x-x1)

The slope is (7-(-5))/(-3-1)=12/-4=-3

Now we solve for b, aka. the y-intercept:

-5=-3(1)+b

-5=-3+b

-2=b

So the equation in slope intercept form is y=-3x-2

As for point-slope form, it's y+5=-3(x-1)

6 0

4 years ago