Answer:
mean = 5
Step-by-step explanation:
the mean is calculated as
mean = = = = 5
What was the least number of notebooks that Jackie could have bought this time?
Answer
notebooks
Answer:
Step-by-step explanation:
Answer:
Step-by-step explanation:
Answer: The method square root of 400 is 20 is equal to 20
Answer:
z ≤ 13
Step-by-step explanation:
note that the symbol ≤ means ' less than or equal to'
then the expression z is less than or equal to can be written as
z ≤ 13
The number of hours Tom took a trip of 1,020 miles is 3 hours.
Given that, Tom took a trip of 1,020 miles.
The speedformula can be defined as the rate at which an object covers some distance. Speed can be measured as the distance traveled by a body in a given period of time. The SI unit of speed is m/s.
Tom traveled by train at 55 miles an hour and the same number of hours by plane at 285 mph.
Let the number of miles travelled by train be x. Then, the number of miles travelled by plane be 1020-x.
Time = x/55 = (1020-x)/285
⇒ 285x = 55 (1020-x)
⇒ 285x = 56100 - 55x
⇒ 285x + 55x = 56100
⇒ 340x= 56100
⇒ x = 56100/340
⇒ x = 165 miles
So, time = 165/55 = 3 hours
Therefore, the number of hours Tom took a trip of 1,020 miles is 3 hours.
To learn more about the speed, distance, and time visit:
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Answer:
He traveled 3 hours by train and 3 hours by plane, so the trip take 6hours.