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ANEK [815]
3 years ago
6

Find x, y, and z. i'll mark brainliest, please help :)

Mathematics
1 answer:
Andreyy893 years ago
5 0

Answer:

z=1.6 y=3.9 x=0.6

Step-by-step explanation:

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Is 8.27 rational or irrational?
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Answer:

Rational

Step-by-step explanation:

A terminating decimal is a rational number.

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The partial factorization of x2 – x – 12 is modeled with algebra tiles. Which unit tiles are needed to complete the factorizatio
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A hiker starting at point P on a straight road wants to reach a forest cabin that is 2 km from a point Q, 3 km down the road fro
pantera1 [17]

Answer:

2.19 km

Step-by-step explanation:

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t = x/8 + √((3 − x)² + 2²) / 3

t = x/8 + √(9 − 6x + x² + 4) / 3

24t = 3x + 8√(13 − 6x + x²)

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24 dt/dx = 3 + 4(13 − 6x + x²)^-½ (-6 + 2x)

When t is a minimum, dt/dx = 0.

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3 / (6 − 2x) = 4(13 − 6x + x²)^-½

3 / (24 − 8x) = (13 − 6x + x²)^-½

(24 − 8x) / 3 = (13 − 6x + x²)^½

(24 − 8x)² / 9 = 13 − 6x + x²

576 − 384x + 64x² = 117 − 54x + 9x²

459 − 330x + 55x² = 0

Solve with quadratic formula.

x = [ 330 ± √((-330)² − 4(55)(459)) ] / 2(55)

x = (330 ± √7920) / 110

x = 2.19 or 3.81

Since 0 < x < 3, x = 2.19.

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3 years ago
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Step-by-step explanation:

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