(Y-1/4)-(y-4/5)=(y+4/10)-1
2 answers:
Answer:
Step-by-step explanation:
- First, let's deal with everything in our parentheses. This includes simplification of fractions and distributing signs.
- Remember than when distributing, everything in the parentheses is affected by whatever is being distributed.
- A quick note that we can get rid of the parentheses once there is only addition and subtraction left next to the parentheses.
- Now that the parentheses are gone, we can add and subtract in any order as long as we don't break the rules of addition and subtraction.
- Let's move all our fractions to one side, and all our unknowns to the other.
- We need a common denominator for our fractions. The quickest way to do this only two different denominators is to multiply the two denominators together.
, so we will multiply both the numerator and the denominator by whatever we need to to get
.
- add the denominators together.
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Answer:
a)
b)
Step-by-step explanation:
From the question we are told that:
3 coin are tossed
Therefore
Sample space
Generally the sets that correspond with the result of at most one tail is therefore given as follows
Therefore
The result is at most one tail when