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3 years ago

In the coordinate plane, choose the graph with the conditions given. x >-2

Mathematics

1 answer:

Fofino [41]3 years ago

8 0

Answer:

In the attachment

Step-by-step explanation:

<, > - dots line

≤, ≥ - solid line

<, ≤ - shading to the left

>, ≥ - shading to the right

-----------------------------------------------------

We have x > -2

dot line x = -2

shading to the right

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Solve the system.

patriot [66]

Answer:

D.(2,-1,-1)

Step-by-step explanation:

-a+4b+2c=-8

3a+b-4c=9

b = -1

Substitute b=-1 into the other equations

-a -4 +2c = -8

3a -1 -4c =9

Multiply the first equation by 2 so we can eliminate c

-2a -8 +4c = -16

Add this to the second equation

-2a -8 +4c = -16

3a -1 -4c =9

-----------------

a -9 = -7

Add 9 to each side

a-9+9 = -7+9

a =2

b=-1

Now we need to find c

-a +4b +2c = -8

-2 -4 +2c = -8

-6+2c = -8

Add 6 to each side

-6+6 +2c = -8+6

2c = -2

Divide by 2

2c/2 = -2/2

c=-1

(2,-1,-1)

5 0

4 years ago

What is a simpler form of the expression 8n + 5n

poizon [28]

Answer:

13n

Step-by-step explanation:

Add them together. They are like terms.

7 0

4 years ago

Read 2 more answers

Identify the constant of proportionality from the graph. PLEASE HELP AND HURRY!!

geniusboy [140]

The answer is D

Have you ever heard of rise over run rise/run
Y/x. Well in this case the run is One with a rise of four

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3 years ago

The following data show the midterm and final exam scores in an English writing class. Student 1 2 3 4 5 6 7 8 9 10 11 12 Midter

tester [92]

Answer:

The co variance of the midterm and final exam scores is 58.76.

Step-by-step explanation:

The formula to compute the sample co variance is:

$Cov(x,y)=\frac{\sum(X-Mean\ of\ X)(Y-Mean\ of\ Y)}{n-1}$

The values are computed in the table below.

Compute the co variance as follows:

$Cov(x,y)=\frac{\sum(X-Mean\ of\ X)(Y-Mean\ of\ Y)}{n-1}\\=\frac{646.33}{12-1}\\ =58.76$

Thus, the co variance of the midterm and final exam scores is 58.76.

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3 years ago

Hello! Please ignore the stuff I already wrote, can someone help me find x and y?

DanielleElmas [232]

Answer:

x=12

y= $12\sqrt{3}$

Step-by-step explanation:

Hey There!

to solve this problem we need to use the 30 - 60 - 90 triangle rule

So you are correct on x because the hypotenuse is 2x

24/2=12

y would equal $12\sqrt{3}$

as you could see in the image down below

4 0

3 years ago