Answer:
Explanation:
The general formula to calculate the probability of each event is:
- Probability = number of positive (desired) outcomes / number of total outcomes
Number of apples = 4
Number of peaches = 5
Number of fruits = 9
Since the three times you return the radomly selected fruit, and then mix it, the three times the probability is not affected by the previous selection; so, these are independent events, and you can calculate the probability of the joint event as the product of the probabilities of each individual event.
Probability of getting an apple = number of apples / number of fruits = 4 / 9
Probability of getting a peach = number of peaches / number of fruits = 5 / 9
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Probability of getting a peach = number of peaches / number of fruits = 5 /9
- <u>Joint probability:</u>
= (4/9) × (5/9) × (5/9) = (4 × 5 × 5) / (9 × 9 × 9) = 100 / 729
Answer:
520 out of 800 students ride the bus
Step-by-step explanation:
Given
Required
Determine the number of students
To do this, we simply multiply the proportion by the total number of students.
i.e.
Express the percentage as decimal
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1% would be £60
3% would be £180
0.5% would be £30
3.5% would be £210
103.5% would be £6210
Answer:
15 tomatoes
Step-by-step explanation:
6:8 = 3:4
multiply each side by 5
= 15/20
so 15 tomatoes