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harina [27]
3 years ago
14

((HELP, ASAP! PLEASE EXPLAIN CLEARLY!))

Mathematics
1 answer:
FinnZ [79.3K]3 years ago
3 0
A. 8/$12=21/$x then cross multiply.
B. 1/$1.5
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Laboratory experiment shows that the life of the average butterfly is normally distributed with a mean of 18.8 days and a standa
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Answer:

a) 0.4164

Step-by-step explanation:

Mean lifespan (μ) = 18.8 days

Standard deviation (σ) = 2 days

For any given lifespan 'X', the z-score is:

z=\frac{X- \mu}{\sigma} \\z=\frac{X- 18.8}{2}

For X=12.04 days:

z=\frac{12.04 - 18.8}{2} \\z=-3.38

A z-score of -3.38 falls in the 0.036-th percentile of a normal distribution.

For X=18.38 days:

z=\frac{18.38 - 18.8}{2} \\z=-0.21

A z-score of -3.38 falls in the 41.68th percentile of a normal distribution.

The probability that a butterfly lives between 12.04 and 18.38 days is

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A bag contains 4 red chips, 5 blue chips, and 6 green chips. If Susie selects a chip from
Anestetic [448]

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23%

Step-by-step explanation:

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Seven less than one half of x
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Answer:

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A linear set of points with a unique starting point and extending infinitely in one direction what term matches the definition?
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Answer:- Option A "ray" is the right term which matches with the definition.


Explanation:-

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5 0
3 years ago
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