Answer:
3.5
Step-by-step explanation:
300÷85=3.529
so it would take him approximately 3.5 more days before he finishes the book
A train needs 4 hours to go from the first station to the second and the total travel time must be no more than 7 hours, then the train needs at most 3 hours to go from the second station to the third station.
The average speed can be obtained by the formula:
Let V be the train speed between first and second stations, then the distance between the first and the second stations is 4V miles.
Therefore,
- the total distance is 4V+120 (V>0);
- the total time is T≤7 hours.
Now
The slowest average speed will be when nominator is the smallest and denominator is the greatest. The greatest denominator could be T=7, then
Samples simply refer to a dataset that represents the overall population.
The term used to describe the type of survey is that, it is a <em>voluntary response sample</em>.
From the question, we understand that the survey question was posted online to internet users.
This means that:
- The respondents are not selected
- The respondents are not a population (<em>because not all internet user would respond)</em>
However, users that choose to respond do so at their own will (voluntarily).
Hence, the type of survey is <em>(a) a voluntary response sample</em>
Read more about samples and surveys at:
brainly.com/question/24564273
Answer: x=3
Step-by-step explanation:
3(4x+3)+2(3x-1)=4x+49
12x+9+6x-2=4x+49
18x+7=4x+49
18x-4x=49-7
14x=42
x=3
