Answer:
Last month's income: $1000
This month's income = $1200
Step-by-step explanation:
Number of subscribers for last month = 100
Fee per subscriber = $10
Sol, last month's income = 100(10) = 1000
This month, 30 new members joined and 10 of the existing members cancelled their subscription.
So, number of subscribers this month = 100 + 30 - 10 = 120
This month's income = 120(10) = 1200
Answer:√5 - √2
Step-by-step explanation:
= √(5 + 2 - 2√10 )
= √{(√5)² +(√2)² - 2.√5.√2}
= √(√5 - √2)² (by identity a² + b² -2ab = ( a-b)²)
= √5 - √2
5√5 = 11.8033989 or -2√5+7
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! :)
I got 224. 7(4)^2 = 112 •2 =224