Answer:
a) 
b) 
Step-by-step explanation:
Conditional probability is the probability of one event occurring with some relationship to one or more other events.
The total probability rule (or the Law of Total Probability) breaks up probability calculations into distinct parts. P(AUB)=P(A)+P(B)-P(A and B)
The general multiplication rule formula is: P(A ∩ B) = P(A) P(B|A)=P(B)P(A|B)
We have the following probabilities:



Part a
We can use this multiplication rule:

For this part we want this probability:

And if we replace we got:

Part b
For this part we want the probability of one event in last year OR one event on the current year, so we can use the probability addition of events:

And for our case we have:


Answer:

Step-by-step explanation:
Given the decimal number 1.89, we are required to convert to fraction
Step 1: write the decimal number given divided by 1

Step 2: multiply both the up and down by 10 for every number you have after the decimal point
We have 2 numbers (8 and 9) after the decimal point. This means we would multiply both the up and down by 100.
Thus,


Converting 1.89 to fraction would give us:

Answer:
404000630
Step-by-step explanation:
4.04×10^8+7×10×9
4.04×100000000+7×10×9
404000000+7×10×9
404000000+70×9
404000000+630
404000630
There’s are 7 days in a week and he said he saves $5 dollars so 7x5 is 35. So he gets $35 dollars a week.
Answer:
0.59 < 0.6
<h3> 6.580 = 6.58
</h3><h3> 33.54 < 33.504
</h3>
14.807 < 14.087
<h3> 4.59 < 4.598</h3>
Step-by-step explanation:
all the bolded ones are correct