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irakobra [83]
3 years ago
15

Solve this equation. Explain or show your WORK. 6(x - 7)= 2x + x + 9

Mathematics
1 answer:
lara [203]3 years ago
8 0

Answer:

  • x = 17

Step-by-step explanation:

  • 6(x - 7)= 2x + x + 9
  • 6x - 42 = 3x + 9
  • 6x - 3x = 9 + 42
  • 3x = 51
  • x = 51/3
  • x = 17
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20% of a is 11. What is a?​
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Answer:

a=55

Step-by-step explanation:

This question is asking for you to find the whole (a), given a part (11). This can be done through multiplication. 20% is 1/5 of 100%. This means to find the whole number, you should multiply the part by 5. 11*5=55. So, a must equal 55.

We can check this answer by working backward. Do this by finding 20% of 55, and checking to see if it is 11. To find a percentage of a number, multiply that number by the percent in decimal form. So, 20% of 55 is equal to 0.2*55, which is 11. Therefore, the answer is correct.

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tresset_1 [31]

Answer:

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