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jok3333 [9.3K]
2 years ago
7

3x + 15 2. Find the value of X

Mathematics
1 answer:
hram777 [196]2 years ago
7 0

Answer:

x=-5 :)

Step-by-step explanation:

3x+15=0

    -15    -15

3x=-15

/3     /3

x=-5

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At the north campus of a performing arts​ school, ​20% of the students are music majors. At the south​ campus, 70​% of the stude
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The north campus had 800 while the south campus had 200.

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The question stated that there are 1000 students in the merged campus. That's the sum of the number of students in the north and the south campus before the merger.

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Before the merger, 20\% of the students of the north campus are of music majors. In terms of x, that's (20\%)\cdot x = 0.20\,x students.

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The question implies that the sum of students in the two campuses should be equal to the number of music students in the east campus. That is:

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