Answer: The value of x is 3.
Step-by-step explanation:
Since we have given that
10,11, 12 and x
Average of above numbers = 9
As we know that
Average is given by

Hence, the value of x is 3.
Answer:
(4, 1/4)
Step-by-step explanation:
Factoring the numerator and the denominator, we have:
Answer: The value of x is 7
Step-by-step explanation: