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03.10.2019 •
Mathematics
Three consecutive even numbers have a sum of 66.
what is the least number?
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Ответ:
Since they are consecutive even numbers, they must be two numbers apart each; (n+2) and (n+4) are the second and third consecutive numbers, respectively.
Now we must add them together, and set the equation equal to 66.
n + (n+2) + (n+4) = 66
Simplify this to be: 3n + 6 = 66
66-6 = 3n
60 = 3n
n = 20
This means that the least number is 20, the second number is 22, and the third number is 24.
Ответ:
That's 22, so the numbers would be 22, 22, and 22 .
If you simply take 2 away from the first number and add it to
the last one, then their sum doesn't change, but now you have
20, 22, and 24 .
Ответ:
Step-by-step explanation:
Here, we want to get the value of angle DEF
we have this as ;
Angle DEF = 1/2 * DOF
1/2 * 150 = 75
This is because angle at the center is twice the angle at the circumference