To determine the total number of people surveyed when given the number who preferred swimming and the percentage they represent, you set up an equation based on the percentage and then solve for the total. With this data, 40 people were surveyed.
The question pertains to the mathematical concept of percentages. You mention that 27.5 percent of the surveyed population favored swimming and this equaled to 11 people. To calculate the total number of people surveyed, we let the total number be 'x'. Therefore, the mathematical equation, based on the provided data, becomes 27.5% of 'x' = 11. In mathematical terms, it can be written as 0.275x = 11. For finding 'x', divide both sides of the equation by 0.275. Thus 'x' = 11 / 0.275 = 40. Therefore, based on the given percentages and data, it's inferred that a total of 40 people were surveyed.
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The probability that the spinner lands on 3 in the first spin and 5 in the second spin is 1 out of 81, given that each spin is independent and the spinner has numbers 1 through 9.
The question is asking about the probability of getting a 3 followed by a 5 on a spinner with numbers 1 through 9. Since the outcomes of spinning are independent, the probability of both events happening is the product of their individual probabilities.
Now, since the spinner has numbers 1 through 9, the probability of landing on any specific number is 1/9. Therefore, the probability of landing on 3 in the first spin is 1/9. In the second spin, the probability of landing on 5 is also 1/9.
To find the combined probability of both these events happening, you need to multiply the individual probabilities together. So, in this case, P(3 and 5) = P(3) * P(5) = 1/9 * 1/9 = 1/81. So the probability of the spinner landing on 3 in the first spin and then 5 in the second spin is 1 out of 81.
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b. 9
c. 12
d. 15
Answer:
d is the correct answer
Step-by-step explanation:
(6r^4S^3)(9rs^2)
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B. At the rate given, how many kilometers can Mikaela bike in 1 hour?
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c. If Mikaela runs for 1 hour and bikes for 1 hour at the rates given, how far will she travel?
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Mikaela can run 10 kilometers in 1 hour.
Mikaela can bike 25 kilometers in 1 hour.
If Mikaela runs for 1 hour and bikes for 1 hour at the given rates, she will travel a totaldistance of 35 kilometers.
We have,
A.
To find the number of kilometers Mikaela can run in 1 hour, we can set up a proportion using the information given:
5 kilometers / 0.5 hour = x kilometers / 1 hour
Cross-multiplying, we get:
(5 kilometers) x (1 hour) = (0.5 hour) x (x kilometers)
Simplifying:
5 kilometers = 0.5x kilometers
To isolate x, we can divide both sides of the equation by 0.5:
5 kilometers / 0.5 = x kilometers
x = 10 kilometers
B.
Similarly, to find the number of kilometers Mikaela can bike in 1 hour, we can set up a proportion:
20 kilometers / 0.8 hour = x kilometers / 1 hour
Cross-multiplying:
(20 kilometers) x (1 hour) = (0.8 hour) x (x kilometers)
Simplifying:
20 kilometers = 0.8x kilometers
Dividing both sides by 0.8:
20 kilometers / 0.8 = x kilometers
x = 25 kilometers
C.
To find the totaldistance Mikaela will travel if she runs for 1 hour and bikes for 1 hour, we can simply add the distances:
Distance = distance run + distance biked
Distance = 10 kilometers + 25 kilometers
Distance = 35 kilometers
Therefore,
Mikaela can run 10 kilometers in 1 hour.
Mikaela can bike 25 kilometers in 1 hour.
If Mikaela runs for 1 hour and bikes for 1 hour at the given rates, she will travel a totaldistance of 35 kilometers.
Learn more about speed here:
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