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:
2x+5<10
Step-by-step explanation:
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Answer:
368.08
So I turn the numbers into fractions so 344% would be 344/100 because percentages are out of 100. Since it is 344% OF 107, you'd put 107 on the bottom of the fraction and the answer will go on top. I multiply the IS with the OF (IS is the top number and OF is the bottom) so you'd multiply 107x344 to get 36808. Since 344 is a percent (out of 100) you have to do divide the answer by 100 to get 368.08
I hope that helps!
Combine like terms: (9x-6)+(8x+9)
9x+8x=17x
-6+9=3
(9x-6)+(8x+9)=17x+3