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Olenka [21]
3 years ago
5

What number set does 20 belong to

Mathematics
1 answer:
lys-0071 [83]3 years ago
7 0

i dont understand ur question pls make it more clear!

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Keisha's teacher gives her the following information:
denis-greek [22]

Answer:

the third one

Step-by-step explanation:

i took the test :)

5 0
3 years ago
Read 2 more answers
Whats the first step*<br><br> -4 = n + 5
Gnoma [55]

Answer is when you look at the problem the first thing you should notice is the variable. Now we’re on to the solving to make this Easyer for you lets put this problem in the correct order 5 + n = -4 so we have to get negative 4 so we can not solve this problem until we replace the variable so we will replace the variable with 9, now the problem will look like this 5 + 9 = -4 and theirs your answer you substitute the variable for 9. Hope this helps pls mark brainlyest.

Step-by-step explanation:

8 0
3 years ago
Is −8 a solution to the equation 3x = 16 − 5x??<br> Step by step please!
Pepsi [2]

Answer:

Step-by-step explanation:

to find out, just sub in -8 for x and find out if it is true

3x = 16 - 5x

3(-8) = 16 - 5(-8)

-24 = 16 + 40

-24 ≠ 56......no, -8 is not a solution

3x = 16 - 5x

3x + 5x = 16

8x = 16

x = 16/8

x = 2 ............2 is the correct answer

7 0
3 years ago
How can I solve this? Please help!!!!!!!!!
babunello [35]
It is most likely C.
7 0
4 years ago
Factorise the following using the Difference of Two Squares or Perfect Squares rule: a) (2x-2)^2 - (x+4)^2 b) (3x+4) (3x-4)
emmainna [20.7K]

Answer:

Step-by-step explanation:

Hello, please consider the following.

a)

(2x-2)^2 - (x+4)^2 \\\\=(2x-2-(x+4))(2x-2+x+4)\\\\=(2x-2-x-4)(3x+2)\\\\=\boxed{(x-6)(3x+2)}

b)

(3x+4) (3x-4)\\\\=(3x)^2-4^2\\\\=\boxed{9x^2-16}

Thank you.

7 0
3 years ago
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