HELP! There is this question on my test:

2 answers:

8 0

There are several information's already given in the question. Based on those information's, the answer can be easily deduced.
The equation given in the question is
x = 0.8x + 72
x - 0.8x = 72
0.2x = 72
x = 360
Now
Number of people that became
member of the site = (80/100) * 360
= 288 people
From the above deduction, it can concluded that the correct option among all the options that are given in the question is 288.

VladimirAG [237]3 years ago

5 0

Answer:

288

Step-by-step explanation:

short and sweet

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$y=3x-4 \\
9x-3y=14 \\ \\
\hbox{substitute 3x-4 for y in the 2nd equation:} \\
9x-3(3x-4)=14 \\
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12=14 \\
not \ true \\ \\
\boxed{\hbox{no solution}}$