The answer is the value of y and the correct answer is c 55…
Answer:
$107.10
Step-by-step explanation:
The original price of the CD player is $120 and we need to take 15% off.
We can find how much we need to subtract by multiplying 120 by .15, which equals 18. Then we can subtract that from 120, to get a sales price of $102.
A shortcut is subtracting 15 from 100 to get 85, and then doing 120*.85 = 102.
From the sales price of 102, there's a 5% tax to add on. 102 * .05 = 5.1
102+5.1 = 107.1
Answer:
10.94
Step-by-step explanation:
The standard deviation is calculated by using the following formula:

This means that N is the total number of cases you want to take into account, times the sum of x at the ith position - x squared.
In other words, the standard deviation in your example implies the following:
26 is the first value, so i = 1, 34 is the second value, so i = 2, 18 where i = 3, and so on and so forth, until you reach the end, which is 6 (so the initial value is 1 and the last one is 6).
You're doing a sum over an iteration of all the numbers in your sample.
So applying the sum of all of the numbers, it gives us the following:


The sum of all of the numbers in your sample is equal to 119.6.
Substitute into the equation once again:

Where the square root of 119.6 is 10.93617...
Rounded to two decimal places: 10.94
Answer: B. 20
Step-by-step explanation: It takes Micah 30 minutes to run 3 miles. If you divide both by three you can see that it take him 10 minutes to run one mile. If you multiply this by 2 then it would take him 20 minutes to run 2 miles.
Answer:
476 balloons
Step-by-step explanation:
4 groups x 100 = 400 balloons
7 groups x 10 = 70 balloons
+6 balloons (leftover)
400+70+6= 476 balloons total for her party