Answer:
Step-by-step explanation:
Given
Required
The probability of selecting 2 same colors when the first is not replaced
The total number of ball is:
This is calculated as:
So, we have:
<em>Note that: 1 is subtracted because it is a probability without replacement</em>
Eg 10 miles,
A: 85+0.1*10=86
B:40+0.2*10=42
eg 100 miles
A: 85+0.1*100=95
B:40+0.2*100=60
eg 450 miles
A: 85+0.1*450=130
B:40+0.2*450=130
so for it to cost less to rent from agency A, m has to be bigger than 450 miles
Step-by-step explanation:
fraction 10/24
you want the ratio
answer is 5:12
if you want the explanation look below
Step One: Reduce the fraction
10/24
=
5/12
Step Two: Rewrite as a ratio
5/12 = 5 : 12
Her overall change in her account would be -$525, because she withdrew $75 seven times.