Arjun should have divided both sides of the equation by 7 instead of multiplying.
Answer:
There is no expression to evaluate.
Step-by-step explanation:
Area = 45 + 90
Answer: 135
Answer:
The mean of x and y is equal to t.
Step-by-step explanation:
Given that,
The mean of t and t+2 is x.
The mean of t and t-2 is y.
i.e.

and

The mean of x and y is :

Hence, the mean of x and y is equal to t.