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Slav-nsk [51]
3 years ago
10

HELP PLEAASE (no fake answers pleassee)

Mathematics
1 answer:
dedylja [7]3 years ago
8 0

Answer:

1) .07

2) .05

3) Sorry, I'm not sure

4a) 8.5a+38

4b) h-2

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(-1, 7) and (-6, -14) are solutions

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The system of equations
cupoosta [38]

Answer:

z = -12

Step-by-step explanation:

The given system of equations is:

xy/(x + y) = 1 ...........................(1)

xz/(x + z) = 2...........................(2)

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But from (1): xy = x + y

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5y - 7x = 0

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5y/7 = y/(y - 1)

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y = 1 + 7/5

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x = 5(12/5)/7 = 12/7 .......................(10)

Using (10) in (5)

z = 2x/(x - 2)

z = 2(12/7) ÷ (12/7 - 2)

= 24/7 ÷ -2/7

= 24/7 × (-7/2)

= -24/2 = -12

z = -12.

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3 years ago
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