Given:
The mean age of 5 people in a room is 26 years.
A person enters the room. The mean age is now 33.
To find:
The age of the person who entered the room.
Solution:
Formula for mean:

The mean age of 5 people in a room is 26 years.



The mean age is now 33. It means, the mean age of 6 people is 33.



Now, the age of the person who entered the room is
Required age = Sum of ages of 6 people - Sum of ages of 5 people
= 
= 
Therefore, the age of the person who entered the room is 68 years.
Answer:
h=-12
Step-by-step explanation:
h/6-1=-3
add 0ne to -3 since it's the opposite of -1
h/6=-2
multiply by 6/1 since it's the opposite of 1/6
h=-12
false that not true they have all unequal sides
Answer:
The slope (m) = 1/3 and the y-intercept (b) = -4