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Mariulka [41]
3 years ago
10

The sum of a number and 3 times its reciprocal is -4.Find the number

Mathematics
1 answer:
Butoxors [25]3 years ago
6 0

Answer:

x = -1 or x = -3

Step-by-step explanation:

x + 3/x = -4

x² + 3 = -4x

x² + 4x + 3 = 0

(x + 1) (x + 3) = 0

x = -1 or x = -3

check: (-1) + (3/-1) = -1 - 3 = -4

           (-3) + (3/(-3)) = -3 -1 = 14

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1 year ago
X=(a+b)/2 solve for a
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Answer:

1.  1200 \ kg/m^3

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a)

35 cm = 0.35 meters

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Step-by-step explanation:

1.

We know

Density = Mass/Volume

Given

Mass = 90 kg

Volume = 0.075 cubic meters

The SI unit for density is kilograms per cubic meters. Our dimensions are just that, so we just need to plug in the numbers into the formula and get our answer. Shown below:

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a)

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