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natulia [17]
3 years ago
9

Whats the middle number of 31?

Mathematics
2 answers:
docker41 [41]3 years ago
6 0
15.5 15.5 x 2 = 31. hope this helps
V125BC [204]3 years ago
6 0

Answer: 16  

Step-by-step explanation:

If you mean there are 31 numbers in a set, the middle can be found by counting half way from each side.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

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The length of a rectangle is 4 more than its width. The area of the rectangle is 21m2 . What is the measure of the width?
nadezda [96]
The width is 3m because 3*7 is 21m^2. Also they said the length is 4 more than the width (3+4=7)
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Sloutions to y=x-4<br> (6,3)<br> (4,0)<br> (3,-1)<br> (2,-4)
Keith_Richards [23]
I hope this helps you



A) x=6 y=3 3=6-4 3=2 false



B) x=4 y=0 0=4-4 0=0 true


C) x=3 y=-1 -1=3-4 -1=-1 true


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3 0
3 years ago
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Pls help...<br><br>solve for x in the following...pls explain <br><br>a)7x+5=3x-1<br>b)5x+12=3x+14​
yKpoI14uk [10]

Answer:

a) x = -1.5

b) x = 1

Step-by-step explanation:

For problem a, you can start by subtracting 3x from both sides to gather all the like terms together:

7x + 5 = 3x - 1

-3x         -3x

4x + 5 = -1

Next, to get the coefficients on one side, you subtract 5 from both sides:

4x + 5 =  -1

    -5      -5

4x = -6

Now, you divide by 4 on both sides to isolate x:

x = -6/4 = -1.5 --- > x = -1.5

For problem b, you start by subtracting 3x from both sides(kinda like problem a):

5x + 12 = 3x + 14

-3x          -3x

2x + 12 = 14

Next, you can subtract 12 from both sides, isolating the "x term".

2x + 12 = 14

       -12  -12

2x = 2

Lastly, you can divide by 2 to get x:

x = 1

7 0
3 years ago
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slega [8]

Answer:

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Answer:

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