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Neporo4naja [7]
3 years ago
12

If 10a+10b=35, what is the average (arithmetic mean) of a and b?

Mathematics
1 answer:
worty [1.4K]3 years ago
6 0

Answer:

1.75

Step-by-step explanation:

If a  and b are two numbers, then their arithmetic mean is

\dfrac{a+b}{2}

Given:

10a+10b=35

Divide this equation by 10:

a+b=3.5

Now, divide it by 2:

\dfrac{a+b}{2}=\dfrac{3.5}{2}\\ \\\dfrac{a+b}{2}=1.75

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