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andrew-mc [135]

3 years ago

12

What’s is the solution to the system of equations graphed below?

2 answers:

deff fn [24]3 years ago

6 0

Answer:

(3, -2)

Step-by-step explanation:

It is where the two lines on the graph intersect.

Blizzard [7]3 years ago

3 0

Answer:

solution is ( 3 , -2) .

Step-by-step explanation:

Given :Graph of y = -2x +4 and y = x -5 .

To find: What’s is the solution to the system of equations graphed below.

Solution : We have given Graph of y = -2x +4 and y = x -5 .

When the two line of graph intersect at a point , that point is the solution of equation.

We can see from the graph lines cut at ( 3 , -2 )

We can also verify by equation

for x = 3 .

y = -2 ( 3) + 4 .

y = -6 + 4 .

y = -2 .

Therefore, solution is ( 3 , -2) .

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How to justify each step in the solution of 5x+15=0

velikii [3]

Answer:

Step-by-step explanation:

The given equation is:

5x+15 =0

Subtract 15 from both sides:

5x+15-15= 0-15

By solving the like terms we get:

5x=-15

Divide both sides by 5

5x/5 = -15/5

Simplify:

x= -3...

8 0

3 years ago

The Weight On Earth Compared To Some Rando Planet... pls help

earnstyle [38]

Answer:

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Step-by-step explanation:

That’s because the planets weigh different amounts, and therefore the force of gravity is different from planet to planet. For example, if you weigh 100 pounds on Earth, you would weigh only 38 pounds on Mercury. That’s because Mercury weighs less than Earth, and therefore its gravity would pull less on your body.

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3 years ago

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nadezda [96]

Answer:

17

Step-by-step explanation:

it has to be under 90 degrees

7 0

3 years ago

If c = 42 -d is true, then which is greater: cord, or are you not able to tell? Explain how you

serious [3.7K]

Answer:

what does d equal?

Step-by-step explanation:

4 0

3 years ago

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