My last 2 questions so I felt generous. (Answer them for brainiest)

Mathematics

1 answer:

prohojiy [21]2 years ago

5 0

Answer:

Step-by-step explanation:

19. 18-4.62=13.38 to spend on the systems or 6.69 a piece

20. 45000+300m=60000

m=50

45000+300m>60000

He needs at least 50 machines to make the 60000.

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Question 2) The measures of the angles of a triangle

Nana76 [90]

Answer:

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C. just choose C. if it isn't right just tell me.

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How do I do this? Please explain in detail.

umka2103 [35]

22.5/(x-6) + 22.5/(x+6) = 9
multiply by x-6
=> (x-6)22.5/(x-6) + (x-6)22.5/(x+6) = 9(x-6)
=> 22.5 + (x-6)22.5/(x+6) = 9(x-6)
multiply by x+6
=> (x+6)22.5 + (x+6)(x-6)22.5/(x+6) = 9(x-6)(x+6)
=> (x+6)22.5 + (x-6)22.5 = 9(x-6)(x+6)
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=> 45x = 9x^2 - 9(36)
=> 0 = 9x^2 - 45x - 9(36)
divide by 9
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=> 0 = x^2 - 5x - 36
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