Answer:
Step-by-step explanation:
Answer:
what is the expression? please provide an expression.
Answer:
a=9+6
p=-30+20
z=15+(-12)
x=-10+(-7)
Step-by-step explanation:
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.
Answer:
Step-by-step explanation:sorry