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Ratling [72]
2 years ago
5

What is the sum of the two expressions? (3/7x+4)+(1/7x-2)

Mathematics
1 answer:
erma4kov [3.2K]2 years ago
3 0

Combine the like terms:

3/7x + 1/7x = 4/7x

4 + -2 = 4-2 = 2

Answer: 4/7x + 2

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If m 2 n, which inequalities must be true? Check all that apply.
anzhelika [568]

Answer:

(a)\ m+ 2.1 > n + 2.1

(b).\ m - (-4) > n - (-4)

(c)\ 9 +m> 6 + n

Step-by-step explanation:

Given

m > n

Required

Select true inequalities

(a)\ m+ 2.1 > n + 2.1

Subtract 2.1 from both sides

m > n

This is true

(b).\ m - (-4) > n - (-4)

Open brackets

m + 4 > n + 4

Subtract 4 from both sides

m > n

(c)\ 9 +m> 6 + n

m> -9+6 + n

m> n-3

This is also true

8 0
3 years ago
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Will mark brainliest im in a rush so please help me if you can
Afina-wow [57]

Answer:

B!

Step-by-step explanation:

5 0
2 years ago
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Write the number equal to 5 tens and 13 ones
serious [3.7K]
To find this out we have to add 5 tens and 13 ones. 
5 tens is equal to 
10 + 10 + 10 + 10 + 10 = 50 

And 13 ones is equal to 
1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 = 13 

Now add 50 and 13 
50 + 13 = 63

So your answer is 63 

good Luck! :)
7 0
3 years ago
Please answer this to the best of your ability
sweet [91]

f(-2)=1.5

f(0)=0.5

f(3)=-1

:)

7 0
3 years ago
Find the surface area plz
vladimir1956 [14]
Hi again! ;)

If we want to find the surface area of a cube, we need to find the area of one surface first, and then multiply that by 9, since there are 9 sides/surfaces on a cube.

Since each side of a square is the same, we first find the area of one surface:

9 × 9 = 81

Then, to find the surface area, we multiply 81 by 6:

81 × 6 = 486

The surface area is
486 \:  {in}^{2}
7 0
3 years ago
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