ANSWER= square root(-1) = i
STEP-BY STEP EXPLANATION:
Imaginary number. An imaginary number is the square root of a negative real number. (The square root of a number is a second number that, when multiplied by itself, equals the first number.)
Mean is the average. To find the mean of a data set, you have to add all the numbers and divide the sum by the amount of numbers you added.
In this equation, you have 8 numbers. That means you will be dividing by 8.
The first thing you need to do is add all the numbers. Add:
Now that you have added all the numbers and got the sum, divide by 8. Remember that you will be dividing by 8 since you added 8 numbers.
Divide:
The mean is 66
If you have any questions, feel free to ask in the comments! :)
What is the least common denominator between 5/6, 2/9 1/12, 3/8 5/9, 2/15
LCD is least common denominator, also called least common multiple LCM
5/6, 2/9 LCD is 18
1/12, 3/8 LCD is 24
5/9, 2/15 LCD is 45
18, 24, and 45 are the least common multiples of the denominators for their own pair.