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Nimfa-mama [501]
3 years ago
11

Use the substitution method to solve the system of equations. y = –4x 8x – y = 6 A.(2, –8)B. (1, –4) C.1/2-4 D.1/2-2

Mathematics
2 answers:
sp2606 [1]3 years ago
7 0

Answer: D. (1/2,-2)

Step-by-step explanation:

satela [25.4K]3 years ago
6 0

y= -4x and 8x-y=6

what you do is switch the negative y to the other side and move the positive 6 to the other side thus making y=8x-6.

I don't get what those numbers are on the question but the way you solve it is by combining them and putting one y into the other

8x-6=-4x   12x=6   6/12=x   .5=x

then you plug in x to find y in whichever equation:

-4x=y   -4(.5)=y   -2=y

so the final answer would be (.5,-2)

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4 years ago
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Afina-wow [57]

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<u>Step-by-step explanation:</u>

It is given that,

A suburban high school has a population of 1376 students.

  • Let the event A be the no.of students participated in sports.
  • Let the event B be the no.of students participated in music.

The number of students who participate in sports is 649.

The number of students who participate in music is 433.

<u>To find the probability of event A (sports) :</u>

P(sports) = No.of students participated in sports / Total students.

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<u>To find the probability of event B (music) :</u>

P(music) = No.of students participated in music / Total students.

⇒ 433 / 1376

∴ P(B) = 443 / 1376

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P(A∩B) = P(A) + P(B) - P(A∪B)

⇒ 649 / 1376 + 433 / 1376 - 974 /1376

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