Answer:
13 hours
Step-by-step explanation:
Average speed = Distance traveled / time taken
⇒ Distance = Average speed × Time
d = s × t
For the first trip;
Average speed = 280 mph
d₁ = 280t₁ ------(1)
where;
d₁ is the distance covered to get to the destination
t₁ is the time taken to get to the destination
For the second trip;
Average speed = 240 mph
d₂= 240t₂ ------(2)
where;
d₂ is the distance covered on the way back
t₂ is the time taken on the way back
The trip is the same distance to and fro. Therefore,
d₁ = d₂
Substituting the equation for d₁ and d₂
280t₁ = 240t₂ ------(3)
It took one hour less time to get there than it did to get back, then,
t₁ = t₂ - 1
t₂ = t₁ + 1 ------(4)
Substituting equation (4) into equation (3)
280t₁ = 240(t₁ + 1)
280t₁ = 240t₁ + 240
280t₁ - 240t₁ = 240
40t₁ = 240
t₁ = 240/40
t₁ = 6 hours
From equation (4)
t₂ = t₁ + 1
t₂ = 6 + 1
t₂ = 7 hours
The total time for the trip is t₁ + t₂ = 6 + 7
= 13 hours
It answer C, that make sure if corrected
Answer:
-3
Step-by-step explanation:
Answer: The correct answer is option D: What is the height of the tallest player on a team?
Step-by-step explanation: In statistics generally, you deal with collection of data among other things. In collecting data, for the purpose of arranging and analyzing, you would need to collect data that can be varied, because the variability of the data collected would help in making an analyses that can be used for other similar data. So asking for someone's name for example is not a statistical question, because the answer is as simple as "My name is Brainly."
Hence, asking for someone's favorite color is not a statistical question. The answer is simple and does not require collecting different sets of data.
Asking for the total number of eggs in 5 dozen is a not statistical question because we already know the answer and there is no variability of the data that would be presented in the answer. Each dozen contains the same number of eggs. So its as good as asking what is the total number of eggs in a dozen, or in 10 dozens, and so on.
The total number of ounces in a gallon is also not a statistical question, because just like in option B above, there is no variability of the data that would be collected. The answer is pretty straight forward and that is 128 ounces (of liquid/fluid). There is no variability that would now give rise to analyses of data.
The height of the tallest player on a team is definitely a statistical question, because, <u>there are several players on a team, and their heights normally cannot be same</u>. So asking for the height of the tallest player simply implies that some are taller than the others, and at least one player is taller than all other players. So there will be variability of data in this particular instance, and the data analyst would have different sets of data (players' heights) available to him/her which can be used to draw conclusions
