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ki77a [65]
3 years ago
9

There are 25 students in a class, 40 percent of whom are girls. If the average

Mathematics
1 answer:
svetoff [14.1K]3 years ago
5 0

Answer:

135

Step-by-step explanation:

120 + 150 = 270

270 ÷ 2 = 135

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Im doing this problem where I have to deal with fractions that have variables in them. here is the problem. I linked the picture
AVprozaik [17]
First you should combine n/6-5n/12
that goes to 2n/12-5n/12 which equals -3n/12

then you should cross multiply -3n/12 by 1/16
12(1)=-3n(16)
12=-48n then solve for n by dividing by -48
-12/48=n simplify -1/4=n or -.25=n
7 0
3 years ago
Find the mean of 81, 97, 99, 89, 91, 76 (round to the hundredths)
Marta_Voda [28]

Answer:

88.83

Step-by-step explanation:

To find the mean of a set of numbers is to find the average a set of numbers.

To solve for the mean you have to add all of the values together and divide that sum by the number of values there are.

Ex. 81, 97, 99, 89, 91, 76

     81 + 97 + 99 + 89 + 91 + 76 = 533

     533 / 6 = 88.83

               ↓

     (number of values)

3 0
3 years ago
What is the solution set of [1/x-2]<-2
BigorU [14]

Answer:

  3/2 < x < 2

Step-by-step explanation:

We assume the problem is ...

  [tek]\dfrac{1}{x-2}<-2[/tex]

This will not be true for x-2 > 0 because that would make the left side positive. So, we must have x < 2, which makes the denominator negative. Multiplying by (x-2), we get ...

  1 > -2(x -2)

  1 > -2x +4

  2x > 3 . . . . . . add 2x-1

  x > 3/2

From above, we also have x < 2, so the solution set is ...

  3/2 < x < 2

7 0
4 years ago
BRRAINLIEST please fast what is (17+13)-14
cestrela7 [59]

Answer:

16

Step-by-step explanation:

( 17 + 13 ) - 14

30 -14

16

7 0
3 years ago
Read 2 more answers
Plz help find the perimeter and the are of the following show work plz
Ksenya-84 [330]
The picture isn’t loading in
7 0
3 years ago
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