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3 years ago

4x - 3y = 23

Mathematics

1 answer:

igor_vitrenko [27]3 years ago

4 0

Answer:

okay so 1st

4x - 3y = 23 (u gonna have to add 3y to - 3y & add it to 23)

+3y +3y (like this) once you got that, add 3 to 23 which is 26

4x = 26y (like this)

---- ------

4 13

so x = 2

Step-by-step explanation:

I don't know about the second one but if I'm right for the first one then let me know lolllllsss I put 13 instead of 4 under 26y because 4 cannot go through 26 but 2 × 13 is 26

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Step-by-step explanation:

Since we have given that

Number of people of A in group 1 = 15

Number of people of B in group 1 = 45

Total number of people in group 1 is given by

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Relative frequency of people of A in Group 1 is given by

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Relative frequency of people of B in Group 1 is given by

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Similarly, Number of people of A in group 2 = 20

Number of people of B in group 2 = 25

Total number of people in group 2 is given by

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Relative frequency of people of A in Group 2 is given by

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Relative frequency of people of B in Group 2 is given by

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Hence, A B

Group 1 0.25 0.75

Group 2 0.44 0.56

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