Brian had 42 class fair tickets to sell. He sold 5/6 of the tickets. How many tickets did Brain sell?
2 answers:
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Answer:
Step-by-step explanation:
Hello,
<u>The mean of five numbers is 8</u> so we can write
<u>When another number is added the mean is 7</u>, let s note x the another number we can write
From the first equation we can say
So the second equation becomes
The solution is then 2
Hope this helps
Answer:
see explanation
Step-by-step explanation:
(a)
let y = f(x), that is
5x + 3 = y
Rearrange making x the subject
Subtract 3 from both sides
5x = y - 3 ( divide both sides by 5 )
x = (y - 3) / 5, hence
(x) = (x - 3) / 5
(b)
(8) = (8 - 3) / 5 = 5/ 5 = 1