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shymitch32
17.07.2019 •
Mathematics
The average of two real numbers is 12.75 and their product is 162.5. what are the numbers?
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Ответ:
12.5 and 13
Step-by-step explanation:
Let the numbers are x and y,
So, their average =![\frac{x+y}{2}](/tpl/images/0100/6964/29d45.png)
And, their product = xy
According to the question,
Also,
xy = 162.5
From equation (1) and (2),
By quadratic formula,
From equation (1),
If y = 12.5,x = 13
If y = 13, x = 12.5
Hence, numbers are 12.5 and 13
Ответ:
But
36 females
Because
There are 48 all together
1/3 question
12 males
48 females