You toss a coin four times. the first, second and third toss are heads. what's the probability of the fourth toss also being hea
2 answers:
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Answer:
or
.
Step-by-step explanation:
We have been given that Nigel is planning his training schedule for a marathon over a 4-day period. He is uncertain how many miles he will run on two days. One expression for the total miles he will run is .
The Commutative Property of Addition states that we can add numbers in any order. For example a and b be two numbers.
According to Commutative Property of Addition .
Similarly, we can write an equivalent expression to our given expression as:
We can simplify our expression as:
.
Therefore, our required expression would be or
.
Basically, we need to plug in the given values for the variables 
and 
into the given expression 
. First off, we can plug in all the given values into the expression, giving us 
. Now, perform the operations on the inside of the parentheses. Doing this, we get 
. Now, we use the distributive property to simplify. This gives us 
. Finally, when we add the two numbers, we get 
. Hope this helped!