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Bond [772]
3 years ago
13

Part A: Solve the equation 7x + 3x − 18 = 6(x + 3), and show your work. (5 points)

Mathematics
2 answers:
Levart [38]3 years ago
7 0

Answer:

9

Step-by-step explanation:

7x +3x - 18 =6(x +3)

10x - 18 =6x +18

10x - 6x =18 +18

4x =36

x=36 :4

x=9

const2013 [10]3 years ago
7 0

Answer:

7x \:  + 3x \:  - 18 = 6(x + 3) \\ 10x - 18 = 6x  + 18 \\ 10x - 18 + 18 = 6x + 18 + 18 \\ 10x = 6x + 36 \\ 10x - 6x \:  = 6x - 6x + 36 \\ 4x = 36 \\ we \: divide \: both \: sides \: by \: 4 \\ 4x \div 4 = 36 \div 4 \\ x = 9

hope that will help you

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maks197457 [2]

Answer:

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Step-by-step explanation:

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3 years ago
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The following formula for a sequence is arithmetic or geometric?
arlik [135]

Answer:

Arithmetic

Step-by-step explanation:

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2 years ago
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Answer:

Step-by-step explanation:

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3 years ago
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Justify Reasoning Determine whether 3x + 12 + x is equivalent to 4(3 + x). Use properties of operations to justify your answer.
Orlov [11]
For 3x + 12 + x, do like terms:
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Hope this helps :)
4 0
3 years ago
+{-x2y+[-(x2y-2xy2+y2)+(-xy2-3y2+x2y)]-(10y2-x2y)}
Kay [80]

Answer:

3xy² -  14y²      

Step-by-step explanation:

I hope that this is the problem

   - x²y + [ - (x²y - 2xy² + y²) + (xy² - 3y² + x²y)] - (10y² - x²y)

= - x²y + [ - x²y + 2xy² - y² + xy² - 3y² + x²y] - 10y² + x²y

Now combine like terms in the [  ].

= - x²y  + [ -x²y + x²y + 2xy² + xy² - y² - 3y² ] - 10y² + x²y

= - x²y  + [ 0 + 3xy² - 4y²] - 10y² + x²y

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=       0 + 3xy² - 14y²

=  3xy² -  14y²       or    y²(3x - 14)

6 0
3 years ago
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