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tamaranim1 [39]
3 years ago
12

Please help me!!!!!!!

Mathematics
1 answer:
hammer [34]3 years ago
3 0

Answer:no

Step-by-step explanation:

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Professor Liu gave the same quiz to the students in her morning class and in her afternoon class. The average (arithmetic mean)
natka813 [3]

Answer:

Afternoon class has more students.

Step-by-step explanation:

Let m be the number of students in the morning class and n be the number of students in the afternoon class.

The average score for the students in the morning class was 80, then the sum of their scores is 80m.

The average score for the students in the afternoon class was 86, then the sum of their scores is 86n.

The sum of the scores of both classes is

80m+86n

and the average score is

\dfrac{80m+86n}{m+n}

The average (arithmetic mean) score for the two classes combined was 84, then

\dfrac{80m+86n}{m+n}=84\\ \\ 80m+86n=84m+84n\\ \\86n-84n=84m-80m\\ \\2n=4m\\ \\n=2m

This means n is greater, so afternoon class has more students.

7 0
3 years ago
From a standard deck of cards a card will be chosen at random. What will be the probability the card is a 2
11Alexandr11 [23.1K]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
What is the perimeter, P, of a rectangle that has a length of x + 5 and a width of y − 1?
Helen [10]

Answer:P=2x + 2y + 8

Step-by-step explanation: Perimeter (p) =2L+ 2w

P= 2(x+5)+2(y-1)

Remove bracket

P=2x+ 10 +2y - 2

P=2x+2y+8

6 0
3 years ago
In a school auditorium, the number of chairs in a row is the same as the number of rows of chairs. If there are 529 chairs in th
BartSMP [9]

Answer:

23!

Step-by-step explanation:

529/23= 23

23 chairs and 23 rows

8 0
1 year ago
The government published the following stem-and-leaf plot showing the number of sloths at each major zoo in the country: pls ans
Sveta_85 [38]

Answer:

3

Step-by-step explanation:

If 4 | 1 = 41, that means that when you're looking at the number, you basically see it without the "|". If you see it that way, the smallest number would be 03.

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2 years ago
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