Can you do 2 problems? and then someone else do the other 2 ty!
1 answer:
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Answer:
- 16
Step-by-step explanation:
Average is calculated as
average =
Thus for the given 10 numbers we have
= - 5 ( multiply both sides by 10 )
total = - 50
let the number added be x, then
= - 6 ( multiply both sides by 11 )
total + x = - 66, that is
- 50 + x = - 66 ( add 50 to both sides )
x = - 16
The new number is - 16
The rules of exponents are
![x^{ \frac{m}{n} } = \sqrt[n]{ x^{m} }](https://tex.z-dn.net/?f=%20x%5E%7B%20%5Cfrac%7Bm%7D%7Bn%7D%20%7D%20%3D%20%5Csqrt%5Bn%5D%7B%20x%5E%7Bm%7D%20%7D%20)
these are just some basic ones
these are just some basic ones