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3 years ago

Can someone help me, please ?? im stuck

Mathematics

1 answer:

Tresset [83]3 years ago

8 0

Part A

5x - 5 >= 10 or-3x + 1 > 13

1) This is a disjunction (OR)

5x - 5 >= 10

5x >= 15

x >= 3

-3x + 1 > 13

-3x > 12

x < -4

Answer

x <- 4 or x >= 3

Part C:

1) This is a conjunction (And)

5x+ 3 <= 18 and 4 - x < 6

5x <= 15 and - x < 2

x <= 3 and x > -2

Answer

-2 < x <= 3

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Tcecarenko [31]

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3 years ago

The average number of mosquitoes in a stagnant pond is 80 per square meter with a standard deviation of 12. If 36 square meters

svp [43]

Answer:

a) 18.4%

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$z(X)=\frac{X-\mu }{\frac{\sigma}{\sqrt{n}}}$

Where 'μ' is the distribution mean, 'σ' is the standard deviation and 'n' is the number of square meters chosen.

For X = 81.8 and n=36:

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A z-score of 0.9 is equivalent to the 81.59 th percentile in a normal distribution.

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3 years ago

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mixas84 [53]

Answer:

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