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: 56 times
Step-by-step explanation:
Answer:
Option A is the correct option
Step-by-step explanation:
Collect like terms
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Move 8 to right hand side and change it's sign
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Add the numbers
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Divide both sides of the equation by 8
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Calculate
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Hope I helped!
Best regards!!
Try to times the all together