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anonymous
 one year ago
Which equation represents "the sum of eight times a number and seven is twice the number"?
8(7 + 2N)
8N = 7 + 2N
7N + 8 = 2N
8N + 7 = 2N
anonymous
 one year ago
Which equation represents "the sum of eight times a number and seven is twice the number"? 8(7 + 2N) 8N = 7 + 2N 7N + 8 = 2N 8N + 7 = 2N

This Question is Closed

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.3If a number is N, what is eight times the number?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0im not completely sure

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.3Ok. A number is 5 What is eight times that number?

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.3Right. How did you do that? You used multiplication. Since the number was 5, and we wanted 8 times the number, you did 8 * 5. Then you actually multiplied the numbers together and got 40. That was correct. You could do the multiplication because you knew what both numbers were.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i whant to be sure its D

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.3In our case, we don't know what number N is. We just know N represents a number. Then 8 times the number is simply 8 times N, which is 8 * N, or even more simply, 8N

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.3Ignore direct answers, and learn from an explanation.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0times is multiplacation 8n then sum is addition 8n+7 twice a number is 2n so 8n+7=2n

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.3OK so far? The unknown number is N. 8 times the number is 8N.

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.3Then the next step is: "the sum of eight times a number and seven" "Sum" is an addition, so we have: 8N + 7

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0i have anouther i whant to see if i got correct ill post it

mathstudent55
 one year ago
Best ResponseYou've already chosen the best response.3Finally, the problem tells us that all that is twice the number. That means 8N + 7 = 2N

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0thanks alot mathstudent and da best
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