Step-by-step explanation:
m² -12 = m
m² = m + 12
m = 
Answer: 92
Step-by-step explanation:
Formula : Sum of first n numbers = Average x n
Given: Average score on first 6 tests= 84
A score on all 8 tests = 86
Then, Sum of first 6 numbers = 84 x 6 = 504
Sum of first 8 numbers = 86 x 8 = 688
Sum of two last numbers = (Sum of first 8 numbers) - (Sum of first 6 numbers)
= 688-504
=184
Average of last two numbers = (Sum of two last numbers )÷2
= 184÷2
= 92
Hence, the average of your last two test scores = 92.
Well first subtract 29 - 5 = 24
Therefore, 24 + 5 = 29
And 29 - 24 = 5
Answer:
Step-by-step explanation:
(a)Probability that these three marbles are all red
choosing 3 red out of 6 is given by 
and choosing 3 marble from 14 marbles=

(b)All of same color
It is possible when they are of either red or green
For red it is 
For Green it is

total=
=