Can someone help me with this? And please, actually try with this one.
2 answers:
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Answer: The correct option is (b)
Step-by-step explanation: Given that Abigail and Bailey wash dogs to make extra money. Abigail can wash all of the dogs in 5 hours and Bailey can wash all the dogs in 3 hours.
We are to find the time taken by them if they wash the dogs together.
Abigail can wash the dogs in 5 hours.
So, in 1 hour, the fraction of the dogs Abigail can wash is given by
Bailey can wash the dogs in 3 hours.
So, in 1 hour, the fraction of the dogs Bailey can wash is given by
Hence, if they work together, then the fraction of the dogs that they wash in 1 hour is given by
Therefore, the time taken by them to wash the dogs if they work together will be
Thus, option (b) is correct.
You are a kite sailing across the ocean. The table gives your height at different times.
A. How many feet do you move each second?
Answer: From the given table information, we clearly see that after every second the kite moves 2 feet
B. What is your speed? Give the units.
Answer: We know that :
Therefore, the speed of the kite is 2 feet per second
C. Is your velocity positive or negative?
Answer: The velocity is positive, because the height of the kite goes on increasing direction
D. What is your velocity? Give the units.
Answer: Here the velocity of kite is:
feet per second
Answer: There is probability of 0.367 that there will be no breakdown on his car in the trip.
Step-by-step explanation:
Since we have given that
Mean (λ) = 0.5 breakdown per week
Number of weeks the owner of the car is planning to have a trip on his car for = 2 weeks
So, mean for 2 weeks would be
We need to find the probability that there will be no breakdown on his car in the trip.
Probability that there will be no breakdown on his car in the trip is given by
P(X=0) is given by
Hence, there is probability of 0.367 that there will be no breakdown on his car in the trip.