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A social networking site recorded that 80% of the people who became members of the site one month were between 30 and 40 years old. The equation below represents this information, where x represents the total number of people who became members of the site that month.
x = 0.8x + 72
How many people who became members of the site that month were between 30 and 40 years of age?
 one year ago
 one year ago
A social networking site recorded that 80% of the people who became members of the site one month were between 30 and 40 years old. The equation below represents this information, where x represents the total number of people who became members of the site that month. x = 0.8x + 72 How many people who became members of the site that month were between 30 and 40 years of age?
 one year ago
 one year ago

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ChmEBest ResponseYou've already chosen the best response.0
was that equation given to you. it seems wrong.
 one year ago

candeebabeeBest ResponseYou've already chosen the best response.0
Thats what the question said
 one year ago

ChmEBest ResponseYou've already chosen the best response.0
where did 72 come from? The people between 30 and 40 would be .80 times the total.
 one year ago

ChmEBest ResponseYou've already chosen the best response.0
ok. Let's solve the equation for x. So we are solving for the total of people who joined.
 one year ago

candeebabeeBest ResponseYou've already chosen the best response.0
okay, i am so confused haha
 one year ago

ChmEBest ResponseYou've already chosen the best response.0
x = 0.8x + 72 x  .8x = .8x + 72  .8x .2x = 72 Divide both sides by .2 x = 360 Now that we know the total we can multiply this by 80% of .8 to get ppl between 3040
 one year ago

candeebabeeBest ResponseYou've already chosen the best response.0
thank you so much!(;
 one year ago
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