Answer:
The odds are 100 out of 200% for both to have heads.
The actual probility is 50%
Step-by-step explanation:
2 x - 5 y = 18 / * 4
3 x + 4 y = 4 / * 5 ( we will use the addition method )
--------------------------
8 x - 20 y = 72
+
15 x + 20 y = 20
-----------------------
23 x = 92
x = 92 : 23
x = 4
8 - 5 y = 18
- 5 y = 18 - 8
- 5 y = 10
y = 10 : ( - 5 )
y = - 2
Answer:
( x, y ) = ( 4, - 2 )
<h3>The exact probability that the blue ball is drawn first and the red ball is drawn second is

</h3>
<em><u>Solution:</u></em>
<em><u>The probability of an event is given as:</u></em>

Given that,
There are 12 balls in a bag
One is blue and one is red
Favorable outcome = blue ball is drawn first
Favorable outcome = 1
Therefore,

Now, without replacement, red ball is drawn second
Therefore,
Total possible outcomes = 12 - 1 = 11

<em><u>What is the exact probability that the blue ball is drawn first and the red ball is drawn second?</u></em>

Thus the exact probability that the blue ball is drawn first and the red ball is drawn second is 
A complex fraction is a fraction of a fraction