Question seem incorrect because 60%,50% and 20% sum up to more than a 100% therefore we've made a little correction
Answer:
0.8
Step-by-step explanation:
Probability = number of favorable outcomes/number of outcomes
Given that 30% are entertained by reading books
50% are entertained by watching TV
20% are entertained by reading books and watching TV
The probability that a person will be entertained by books or TV =
30/100+50/100= 3/10+5/10
=8/10
=0.8
Answer:
Step-by-step explanation:
Given
Solving (a): x
To do this, we make use of common difference (d)
So, we have:
Substitute known values
Remove brackets
Collect like terms
Collect like terms
Solving (b): Sum of progression
First, we calculate the first term
Next, calculate d
Next, we calculate n using:
Where:
So:
Subtract 3 from both sides
Divide both sides by 3
Add 1 to both sides
The sum of the progression is:
So,, we have:
Possibly due to the fact that it does not follow the trend of the linear equation. If it were to follow the trend, the time would be at the negatives, which may mean they have a disadvantage (they start BEHIND the starting line) or the person is superhuman and travels at negative time :P