Answer:
Step-by-step explanation:
Comment
If 4 numbers have an average of 9, then total of the 4 numbers is 4 * 9 = 36.
If one of the 4 numbers is a 7, then
7 + x = 36 where x is the sum of the other 3 numbers.
7 + x = 36 Subtract 7 from both sides
7- 7 +x = 36 - 7
x = 29
Answer 29
The probability that it is a nine is calculated by 4/52 (because there are four nines)
this equals 1/13, that means there is a 12/13ths chance you will not draw a nine
Answer:
−
6
√
2
Step-by-step explanation:
A, B and c are all answers
Answer:
B) 10
Step-by-step explanation:
3 x 10³ = 3000
3000 * 10 = 30000