Answer:
5
Step-by-step explanation:
The mean is the same as the average value of a data set and is found using a calculation. Add up all of the numbers and divide by the number of numbers in the data set.
Answer:
d<-1.75
Step-by-step explanation:
In the step after -6x+10=4x+20, he moved the terms incorrectly. you have to add 6x to both sides so it would be 10=4x+6x+20 which simplifies to 10=10x+20. subtract 20 from both sides to get -10=10x. divide both sides by 10. the answer is x=-1
First you need to multiply each side by 2
X - C. X - C = d * 2
-------- = d --->
2
Then add X from each side
C = d * 2 + X
