All categories

2 years ago

Anybody Know This. ?

Mathematics

2 answers:

love history [14]2 years ago

8 0

Answer:

The answerrrrrrrrrrr is (0,-2)

iren [92.7K]2 years ago

4 0

Answer:

(-2,-4) is the answer.

Step-by-step explanation:

3x-y=-2

3(-2)-(-4)=-2

-6+4=-2

-2=-2

L.H.S = R.H.S

You might be interested in

I NEED HELP PLS i don’t understand exactly how to do this :/

Sholpan [36]

Answer:

I assume AC = 49.89 since the number is cut off

Step-by-step explanation:

tangent(degree) = opposite / adjacent

To find AC, you can set up tan(29) = AC / CB

tan(29) = AC / 90 (the picture is cutted off, so I assume....)

$90*tan(29)$ = AC

4 0

3 years ago

Which formula can be used to find the account balance ??

Ipatiy [6.2K]

It’s b since 3% times 250 equals 7.4 and 7.4 times 14 equals 105 so you add 105 to 250 and you get 355

4 0

2 years ago

Read 2 more answers

Calculating the degrees of freedom, the sample variance, and the estimated standard error for evaluations using the t statistic

Yuliya22 [10]

Answer:

a) For the first part we have a sample of n =10 and we want to find the degrees of freedom, and we can use the following formula:

$df = n-1= 10-1=9$

d.9

b) $s^2 = \frac{SS}{n-1}= \frac{600}{41-1}= 15$

a.15

c) For this case we have the sample size n = 25 and the sample variance is $s^2 =400$ , the standard error can founded with this formula:

$SE = \frac{s^2}{\sqrt{n}}= \frac{400}{\sqrt{25}}= 80$

Step-by-step explanation:

Part a

For the first part we have a sample of n =10 and we want to find the degrees of freedom, and we can use the following formula:

$df = n-1= 10-1=9$

d.9

Part b

From a sample we know that n=41 and SS= 600, where SS represent the sum of quares given by:

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

And the sample variance for this case can be calculated from this formula:

$s^2 = \frac{SS}{n-1}= \frac{600}{41-1}= 15$

a.15

Part c

For this case we have the sample size n = 25 and the sample variance is $s^2 =400$ , the standard error can founded with this formula:

$SE = \frac{s^2}{\sqrt{n}}= \frac{400}{\sqrt{25}}= 80$

8 0

3 years ago

I REALLY NEED SOME HELP! THANK YOU SO MUCH!

Katyanochek1 [597]

I thinkkk it’s both so C

4 0

2 years ago

The value 3pie/16 is a solution for the equation 2cos^2(4x)-1=0 true or false

SSSSS [86.1K]

The answer is true i had the same question

3 0

1 year ago