Every month, a group of 46 students write essays in a class. Each student writes 2 essays, and each essay contains an average of
2 answers:
Answer: The students write 92,000 words every month.
Step-by-step explanation:
Given : Every month, a group of 46 students write essays in a class.
Total number of students in the class = 46
Number of essays written by each student = 2
Then the number of essays written by all the students will be :-
Also, each essay contains an average of 1000 words.
then , the number of words do the students write every month will be :-
Hence, the students write 92,000 words every month.
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Answer:
80 m^2
Step-by-step explanation:
The given information lets you write two equations involving length (x) and width (y).
- 2(x +y) = 36 . . . . the perimeter is 36 m
- (x+1)(y+2) -xy = 30 . . . . increasing the length and width increases area
The second of these equations simplifies to another linear equation, giving a system of linear equations easily solved.
xy +y +2x + 2 -xy = 30
2x +y = 28 . . . . . . . subtract 2
Dividing the first equation by 2 gives
x +y = 18
and subtracting this from the above equation gives ...
(2x +y) -(x +y) = 28 -18
x = 10
Then
y = 18 -10 = 8
The area of the original rectangle is xy = 10·8 = 80 m^2.
The distance between any 2 points P(a,b) and
Q(c,d) in the coordinate plane, is given by the formula:<span>
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Using this formula we calculate the distances |PA|, |PB|, |PC|, |PD| and |PE| and compare to 5.
Answer: B and D
