Answer:
17
Step-by-step explanation:
The expression of interest is the difference of the two given expressions.
(-4x +6y) -(-2x -7y) = (9) -(-8)
-2x +13y = 17
The value is 17.
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<em>Additional comment</em>
You could go to the trouble to solve the two equations for x and y, then compute the value of the expression you want. As we saw above, that is not necessary.
The first step in problem solving is always "look at the given information and how it relates to what you are asked." A little time spent doing that can save a lot of effort in the actual problem solving process.
In order to find the range of any set of numbers, you must look at the highest and lowest numbers.
In this case the highest is 88 and the lowest is 7.
To find the range you subtract these numbers.
So, 88 - 7 equals 81.
The range is 81!
Answer:
Average of amount of time students spend trying to find an eatery spot on campus.
The sample would be a pool of 100 students to survey from.
Population would be all the students attending Harvard university.
Statistic would be the average amount of time spend looking for eatery spot in campus.
The parameter would be the mean used to find the average amount of time spent looking for eatery spot in campus.
It was a convenient sample.
Step-by-step explanation:
A population is the entire pool from which a statistical sample is drawn. In this case our population is the entire students that attend Harvard University.
A sample is usually drawn from a population. In this case, the 100 students that were drawn from the population is the sample.
The sample was a convenient sample as the sample can be easily drawn from the population population, it doesn't depend on any probability.
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Answer: 360 degrees!
Step-by-step explanation: To find the sum of the interior angles, multiply the number of triangles by 180. C) The sum of the interior angles in any polygon can be found by multiplying the number of triangles formed by the diagonals from one vertex times 180 degrees in each triangle. Hope this helps, have a wonderful day! :D
