9514 1404 393
Answer:
7
Step-by-step explanation:
When the mean of two numbers is the same as one of the numbers, then the other number also has that same value. This is true for any kind of mean:
arithmetic, geometric, harmonic.
The other number would be 7.
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The geometric mean (m) of a and b is ...
m = √(ab)
We have ...
7 = √(7b)
49 = 7b . . . . . square both sides
7 = b . . . . . . . .divide by 7
a = b = m = 7 in this case.
Answer:
Step-by-step explanation:
Given
Required
Express as a standard polynomial
We have:
Rewrite as:
Open bracket
Add like terms
Answer:
3 + 
is irrational, as is an irrational number in itself, not being able to change into a fraction as it is a non-terminated number.
~
Answer:
5 and 6
Step-by-step explanation:
5 and 6
