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grin007 [14]
3 years ago
14

How many classes have between 27 and 31 students?

Mathematics
1 answer:
bekas [8.4K]3 years ago
5 0
I’m not sure but I think 4 classes have between 27 and 31 students
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4x+(x-y/8)=17 and 2y+x-(5y+2/4)=2 by using elimination method
vladimir2022 [97]

Answer:

x=811/238, y=36/119. (811/238, 36/119).

Step-by-step explanation:

4x+(x-y/8)=17

2y+x-(5y+2/4)=2

-----------------------

4x+x-y/8=17

5x-y/8=17

40x-y=136

y=40x-136

------------------

2y+x-5y-2/4=2

2y-5y+x-1/2=2

-3y+x=2+1/2

-3y+x=4/2+1/2

-3y+x=5/2

-3(40x-136)+x=5/2

-120x+408+x=5/2

-119x=5/2-408

-119x=5/2-816/2

-119x=-811/2

119x=811/2

x=(811/2)/119

x=(811/2)(1/119)=811/238

y=40(811/238)-136

y=16220/119-136

y=36/119

x=811/238, y=36/119.

4 0
3 years ago
In 1850, a person sold a house to a lady for $30. If the lady had put the $30 into a bank account paying 4% interest, how much w
jekas [21]
30$ profit each person of connect
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3 years ago
Yall know the answer to this if so please help
RoseWind [281]

Answer:

a,b,d,e for sho on engunity

6 0
3 years ago
A movie lasts 2 1/3 hours james watches 3/4 of the movie then pauses it while he eat dinner how long did he spend watching the m
Margaret [11]

Rewrite the length of the movie as an improper fraction.

2 1/3 = 7/3

Now multiply the length of the movie by 3/4

7/3 x 3/4 = (7 x3) / (3 x 4) = 21/12 = 1 3/4 hours

8 0
3 years ago
NEED HELP !! #12,13,14
djverab [1.8K]

Answer: PTR = 80°

PTQ= 45° PTS= 128°?

Step-by-step explanation:

See angles <ptr <ptq <pts ar based off of the number of degrees on the protractor

3 0
2 years ago
Read 2 more answers
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