Answer:
The mean of A and C is equal to 10.
Step-by-step explanation:
We know that,
![\text{Mean}=\dfrac{\text{Sum of observations}}{\text{Total no of obervations}}](https://tex.z-dn.net/?f=%5Ctext%7BMean%7D%3D%5Cdfrac%7B%5Ctext%7BSum%20of%20observations%7D%7D%7B%5Ctext%7BTotal%20no%20of%20obervations%7D%7D)
The mean of A and B is 20,
![A+B=20\\\\A+B=40\ \ .........(1)](https://tex.z-dn.net/?f=A%2BB%3D20%5C%5C%5C%5CA%2BB%3D40%5C%20%5C%20.........%281%29)
The mean of B and C is 24,
![B+C=24\times 2\\\\B+C=48\ \ .........(2)](https://tex.z-dn.net/?f=B%2BC%3D24%5Ctimes%202%5C%5C%5C%5CB%2BC%3D48%5C%20%5C%20.........%282%29)
The mean of A,B and C is 18,
![A+B+C=18\times 3\\\\A+B+C=54\ .....(3)](https://tex.z-dn.net/?f=A%2BB%2BC%3D18%5Ctimes%203%5C%5C%5C%5CA%2BB%2BC%3D54%5C%20.....%283%29)
Put the value of A+B from (1) in (3),
C = 14
Put the value of B+C from (2) in (3)
A = 6
Mean of A and C is :
![M=\dfrac{A+C}{2}\\\\M=\dfrac{14+6}{2}\\\\M=10](https://tex.z-dn.net/?f=M%3D%5Cdfrac%7BA%2BC%7D%7B2%7D%5C%5C%5C%5CM%3D%5Cdfrac%7B14%2B6%7D%7B2%7D%5C%5C%5C%5CM%3D10)
So, the mean of A and C is equal to 10.
Answer:
132/100, or 1.32
Step-by-step explanation:
Just change 13/10 to 130/100 and add 2/100 to make it 132/100, or 1.32 :)
Answer:
-4/7
Step-by-step explanation:
To calculate slope, you should put your points into this form - (y1-y2)/(x1-x2). In this case, it's (-5+1)/(4+3).
Answer:
<h2>$2.17 per battery</h2>
Step-by-step explanation:
RATE: 6:13
A unit rate is a rate with 1 in the denominator. If you have a rate, such as price per some number of items, and the quantity in the denominator is not 1, you can calculate unit rate by dividing each term by the lower number to make it 1.
Divide 13 by 6
$2.17 a battery
UNIT RATE: $2.17:1
I'm always happy to help :)