Answer:
1) Is more representative
Step-by-step explanation:
The problem with his selection is that maybe there are few students participating in certain sport and those students maybe do quite more excercise than the rest (or quite less). This will modify the results because the sample he selected is biased. This problem wont be solved by method 3 or 4, because he is still selecting students that may modify heavily the results with a high probability
This problem will also appear if he choose a sample by class. Maybe, in a class there are quite few students, and selecting from class will make those students appear quite more often than, lets say, a 7th grade student selected at random, therefore the selection is biased in this case as well.
If he has a list with all seventh grade students, each student is equallly likely to be selected and as a consequence, the the results wont be biased. Approach 1 is the best one.
After making six monthly payments on her car loan, Thomas's savings account will be lower.
Answer:
C.
Step-by-step explanation:
Answer:
Step-by-step explanation:
the general equation for a line is:
where 
is the slope of the line, and 
is the y-intercept.
Since we need a slope of -2/3:
,
So far we have that the line must have the equation:
the graph of a line with a negative slope is one that "falls" from left to right in the plane. And the number 
means that it falls at a ratio of 2 units in the y-axis for every 3 in the x-axis.
we are told that the y-intercept is that of the line:
--> here the y-intercept is -2.
Thus the equation of the line we are looking for is:
which means that this line crosses the y-axis at -2, and the graph is the one in the attached image.
13.542 = 35.42*0.1 +10
13.542 is 10 more than 10% of 35.42
781 = 78.1 * 10
781 is equal to 10 times 78.1
1.2 has two significant figure but 01.20 has 3 significant figure
