Answer:
10
Step-by-step explanation:
The current probability of picking a red ball is 
. When 5 more balls are added, the probability is 3/4. We can write a ratio for this problem:
When using cross multiplication to solve this, you get 3 * 20 = 4(x+5).
60 = 4x + 20
40 = 4x
x = 10 red balls
1) 8 41/48
2) 9 16/27
3) 41 2/5
4) 13 55/63
hope this helps x
Answer:
in the pic
Step-by-step explanation:
answer A
.....
Answer:
Answer:
3x + 3y = 0
7x - y = 8
Step-by-step explanation:
Answer: 6.3
Step-by-step explanation:
The formula for geometric mean is given as :
G.m = 
Therefore , the geometric mean between 4 and 10 will be :
G.m = 
= 
= 2
= 6.3
