3 years ago

You use 4 gallons of water on 14 plants in your graden. At this rate, how much water will it take to water 35 plants

Mathematics

1 answer:

Jlenok [28]3 years ago

8 0

It will take 10 gallons of water to water the 35 plants

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aalyn [17]

(3n+2)/(n-4) - (n-6)/(n+4)

common denominator (n-4)(n+4)

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Use the foil method:

{(3n²+14n+8)-(n²-10n+24)}/{(n-4)(n+4)}

distribute negative sign:

{(3n²+14n+8-n²+10n-24)}/{(n-4)(n+4)}

subtract:

(2n²+24n-16)/{(n-4)(n+4)}

take out 2:

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3 years ago

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kupik [55]

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3 years ago

Solve the equation for all real solutions in the simplest form. -5z^2-3z-11=-6z^2

horsena [70]

Answer:

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Step-by-step explanation:

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2 years ago

A set of physics exam scores are normally distributed with a mean of 80 points and a standard deviation of 6

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The proportion of exam scores that are lower than Irina's score is 0.9938

Step-by-step explanation:

mean: 80 points

standard deviation (sd): 6 points
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z-score is computed as follows:

z = (x - mean)/sd

z = (95 - 80)/6 = 2.5

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P(z < 2.5)

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Step-by-step explanation:

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