(10v + 45) = 5(2v + 9)
To factor find a number that can go flu shot into the 2 numbers given. In the question you posted, th at number was 5. 5 could go into 10v and 45.
If you need a better explanation just as in the comments.
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The third one. You just have to simplify the inequalities. Plz give brainliest
Answer:
The mean of the given set of numbers is 3.5
Step-by-step explanation:
We need to find the mean of following numbers:
8.9, 6.1, -4.8, 8.2, 2.7,-0.1
For calculating the mean the formula used is: 
Finding sum of numbers:

Total numbers = 6
So, mean is:

So, mean of the given set of numbers is 3.5