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Hatshy [7]
3 years ago
7

Mr. Plum's math class of 25 students had an average of 85 on a test. Miss Scarlett's class of 22 students had an average of 87 o

n the same test. What is the average of the two classes combined?
Mathematics
2 answers:
Monica [59]3 years ago
6 0
Use ((85x25)+(22x87))/ 47 for this to get the answer of about 86 (rounded)
maria [59]3 years ago
3 0
Add the two averages together and then divide it by 2. Thats your answer.
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i just need a little help with this not all questions have to be answered i just want to know how to find it.
Olenka [21]
To find the mean you have to get the average number found by adding all data points and dividing by the number of data points.

Example: The mean of 4, 1, and 7 is (4+1+7)/3 = 12/3 = 4

For median you have to get the middle number which is found by ordering all data points and picking out the one in the middle (or if there are two middle numbers, taking the mean of those two numbers).

Example: The median of 4, 1, and 7 is 4
because when the numbers are put in order (1, 4, 7) the number 4 is in the middle.

To get the mode you have to get the most frequent number which is, the number that occurs the highest number of times.

Example: The mode of {4,2,4,3,2,2} is 2 because it occurs three times, which is more than any other number.

Hope that helps.
3 0
2 years ago
What is the value for 19 - 6x = y when x = 7 ?<br><br> 6<br> 13<br> -23<br> 32
Nutka1998 [239]

Answer: -23

Step-by-step explanation:

19 - 6(7) = y

19 - 42 = y

y = -23

5 0
2 years ago
Read 2 more answers
The vertex form of the equation of a parabola is y=(x+5)^2 + 49. What is the standard form of the equation
svet-max [94.6K]
y=(x+5)^2+49\\&#10;y=x^2+10x+25+49\\&#10;y=x^2+10x+74
8 0
3 years ago
Read 2 more answers
The value of 60 is between which pair of consecutive numbers
finlep [7]
The answer would be
<span>59 and 60.</span>
3 0
3 years ago
Can anyone answer these?
soldier1979 [14.2K]

Answer:

4) 3 for the numerator. 9 for the denominator

5) 6 for the first blank square and 48 for the second blank.

6) 2 for the denominator. 6 for the numerator. 30 for the second numerator.

Step-by-step explanation:

sorry but those are the only ones i know

Hope this helps!

3 0
2 years ago
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