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german
3 years ago
12

Which expression is equivalent to 4x+3x+4-2x

Mathematics
1 answer:
kvv77 [185]3 years ago
6 0

Answer:

5x+ 4

Step-by-step explanation:

First, put all of the x variables together. So 3x+4x=7x

7x + 4 -2x  Since the 2x is negative you can subtract it from 7x and get 5x.

you can not add the four to the 5x because it does not have a matching variable.

So, you have: 5x+ 4

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Read The question and give Me The answer for number 17
Andre45 [30]

Answer:

( - 5,2);( -2, -3); (4, -1)

So your answer is: A.

3 0
3 years ago
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A cube has volume 216cm find total surface area of cube​
Katena32 [7]

Answer:

Answer: 216 cm2 (square centimetres cm^{2}, in your question you had to put cm3, cubic centimetres, it's IMPORTANT )

Step-by-step explanation:

A perfect cube by definition has 3 equal dimensions, as an immediate rule: volume and total surface are equal, only the unit of measure changes (cubic for the volume, square for surface).

But let's calculate it anyway:

Volume  = Edge * Edge * Edge = length * width * depth = Edge^{3}  (remember: all edges are equal in this case)

so Edge = \sqrt[3]{Volume}

in your example Edge = \sqrt[3]{216} = 6cm

So the surface of one side is 6*6 = 36cm^{2}

There are 6 sides in total, so the total surface is 6*36 = 216 cm^{2}

Note: I call them "edges" but in case of a cube most say just "length"

3 0
3 years ago
Need help!!! i also have similar question to this one too if you want to help me. :)
natta225 [31]

Answer:

19 pts

Step-by-step explanation:

3 0
2 years ago
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Please help me solve this problem
Lera25 [3.4K]

Answer:

x ≤ 17

Step-by-step explanation:

This is the same as solving an equation, except instead of and equal sign it's an arrow.

We have to evaluate everything in the parenthesis first.

3x - 2 (x + 1) ≤ 15

3x - 2x - 2 ≤ 15

Next, we combine like terms - x's

3x - 2x - 2 ≤ 15

x - 2 ≤ 15

Combine like terms - constants (add 2 to both sides)

x - 2 ≤ 15

<u>x ≤ 17</u>

5 0
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Value of x in the equation 9 for x + 2 equal 20​
Bogdan [553]
18. all you have to to is take twenty and subtract 2 from it and you get x
3 0
3 years ago
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