Answer:
The relation between m and n is , m = n
Step-by-step explanation:
Given as :
The average for n class = 0.82 = 82%
The average for m class = 0.78 = 78%
The average for ( m + n ) class = 80%
So ,
= 82%
And
= 78%
And ,
= 80%
So , 0.82×n + 0.78×m = 0.80× (m+n)
Or, 0.82×n - 0.80×n = 0.80×m - 0.78×m
Or, 0.02×n = 0.02×m
Or,
= 
∴
= 1
I.e m = n
Hence The relation between m and n is , m = n Answer
V = 36 pi centimeters cubed
30 in = 2.5 ft
A = (1/2)(2.5 ft)(3 ft) = 3.75 ft²
Total would be "x" plus "y".
Probability of drawing a black ball is x / (x + y)