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laiz [17]
3 years ago
9

Find the domain of the rational expression 8-x/7x+21

Mathematics
1 answer:
Nat2105 [25]3 years ago
3 0

Answer:

  all real numbers except x=-3

Step-by-step explanation:

Perhaps you want the domain of ...

  (8 -x)/(7x +21)

The domain is all real numbers except the one that makes the denominator zero: x = -3.

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Write, and show on a number line, the set of all the numbers that are greater than (−8) and less than (−2)
stira [4]

Answer:

-8, -7, -6, -5, -4, -3, -2

Step-by-step explanation:

just put those on a number line

---.----.----.-----.----.----.-----.---

 -8.  -7  -6  -5   -4   -3   -2

(Best example I could do on the computer)

5 0
3 years ago
What is the area of this figure I need help please
coldgirl [10]

Answer:

Area = 126

Step-by-step explanation:

To figure out the area of the triangle, we must do 1/2 base times height. Which would be 1/2 of 6 times 6. Which is 18. Then to figure out the rectangle is just doing the width times the length and the same for the square. So 6 times 12 plus 6 times 6 equals 108. Then we add the triangles area and we come out with 108 plus 18 which equals 126.

3 0
4 years ago
(y +12)<br> (y - 18)<br> (x)<br> (z)<br> x=<br> y =<br> Z =
Wittaler [7]

Answer:

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Step-by-step explanation:

3 0
3 years ago
The picture represents three steups. How can these setups be used to detrmine the strength
Rashid [163]

Step-by-step explanation:

The battery of setup 'a' is the strongest, this is indicated by the glowing of the bulb, as we can see the bulb is the brightest at the setup 'a'. Next moving on to the setup 'b', in this setup, the bulb is glowing a bit dimmer than the setup 'a', hence we can find out that setup 'b' battery strength is a little less than 'a'.  Now coming to setup 'c', here we see that the bulb is not even glowing which indicates that the battery has no strength or that it has been used up.

If my answer helped, please mark me as brainliest,

Thank you !

5 0
4 years ago
Length is 2metres and breadth is 1 1\2<br><br>​
V125BC [204]
“Let the width of the garden =x meter

Then length=(x+4) meter

Half perimeter =36 m

So perimeter of garden =(2×36)=72 meters

According to the question

⇒2(l+b)=72

⇒2(x+x+4)=72

⇒2x+2x+4=74⇒4x=64⇒x=16 meters

Hence,the width of the garden =16 meters

The length of the garden =(16+4)=20 meters”
3 0
3 years ago
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