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TEA [102]
3 years ago
15

a total of 300 trees will be planted in a park. there will be 2 pine trees for every 3 maple trees planted plot the poinys that

represent the number of pine and mapletrees planted
Mathematics
2 answers:
marysya [2.9K]3 years ago
5 0
If you would like to know how many pine and maple trees will be planted, you can calculate this using the following steps:

2 pine trees + 3 maple trees = 5 trees

300 trees / 5 trees = 300 / 5 = 60

pine trees: 2 * 60 = 120
maple trees: 3 * 60 = 180

The correct result would be 120 pine trees and 180 maple trees.
Paul [167]3 years ago
3 0

Answer:

120 pine and 180 maple

Step-by-step explanation:

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Answer:

\bar x = 82

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Step-by-step explanation:

Given

n = 12

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Solving (a); Point estimate of mean

To do this, we simply calculate the sample mean

\bar x = \frac{\sum x}{n}

\bar x = \frac{87+ 91+ 86+ 82+72+91+60+77+80+79+83+96}{12}

\bar x = \frac{984}{12}

\bar x = 82

Solving (b); Point estimate of standard deviation

To do this, we simply calculate the sample standard deviation

\sigma = \sqrt{\frac{\sum(x-\bar x)^2}{n - 1}

\sigma = \sqrt\frac{(87-82)^2+ (91-82)^2+ ....+ (79-82)^2+ (83-82)^2+ (96-82)^2}{12-1}

\sigma = \sqrt\frac{1022}{11}

\sigma = \sqrt{92.91}

\sigma =  9.64

<em>Note that: The sample mean and the sample standard deviation are the best point estimators for the mean and the standard deviation, respectively.</em>

<em>Hence, the need to solve for sample mean and sample standard deviation</em>

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3 years ago
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Alexxandr [17]

Answer:

x = 30

Step-by-step explanation:

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\frac{3}{5}(30) = 18

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3 years ago
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Step-by-step explanation:

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Then we move 6 to divide - 18.

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Jobisdone [24]

Answer:

60

hope this helps

have a good day :)

Step-by-step explanation:

4 0
3 years ago
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Answer:

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