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3 years ago

Pls can someone help me with this I have 10 mins pls!!!

Mathematics

1 answer:

-Dominant- [34]3 years ago

3 0

Answer:

I THINK THIS WILL BE THE ANSWER

Step-by-step explanation:

have a nice day and also i have mathswatch too

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What is the expression 6 times the quantity n plus 7? (there is no picture for it)

lesantik [10]

Answer:

it's 6n + 7

Step-by-step explanation:

hope this helped a little bit :))

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3 years ago

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Use an exponential expression to calculate the area covered by purple loosestrife 7 years from now. Is this a valid

Bezzdna [24]

The area of the wetland that will be covered in purple loosestrife 7 years from now is modeled by this expression.

500(1.2)^7

After evaluating the expression, the model predicts that approximately 1,792 acres of the wetland will be covered in purple loosestrife 7 years from now. This is not a valid prediction because the total area of the wetland is only 1,240 acres. So a constraint on the model is that the value of the expression 500(1.2)^t must be less than or equal to 1,240.

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2 years ago

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What is the z-score of a value that is 2.08 standard deviations greater than the mean?

Nuetrik [128]

The question is asking to states the value of the z-score of a value that is 2.08 standard deviations greater than the mean and base on my research, the possible answer would be z-score is the number of standard deviations above the mean. If you are 5 standard deviations above the mean, that is defined as z = 5. If you are 1.1 standard deviations above the mean, that is defined as z = 1.1. 
And so if you are 2.08 standard deviations above the mean

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3 years ago

Write each as a fraction or mixed number in lowest terms 6.05 12.346 7.5

AVprozaik [17]

Answer:

Please check the explanation.

Step-by-step explanation:

Given the decimal number

$6.05$

Rewrite as

$=6+0.05$

$=6+\frac{5}{100}$ ∵ 0.05 = 5/100

$=6+\frac{1}{20}$

$=\:\frac{121}{20}$

$=6\frac{1}{20}$

Given the decimal number

12.346

Rewrite as

$=12+0.346$

$=12+\frac{173}{500}$ ∵ 0.346 = 346/1000 = 173/500

$=12\frac{173}{500}$

Given the decimal number

7.5

Rewrite as

$=7+0.5$

$=7+\frac{1}{2}$ ∵ 0.5 = 1/2

$=7\frac{1}{2}$

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2 years ago

The time that it takes a randomly selected job applicant to perform a certain task has a distribution that can be approximated b

storchak [24]

Answer:

A task time of 177.125s qualify individuals for such training.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by

$Z = \frac{X - \mu}{\sigma}$

After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X. Subtracting 1 by the pvalue, we This p-value is the probability that the value of the measure is greater than X.

In this problem, we have that:

A distribution that can be approximated by a normal distribution with a mean value of 145 sec and a standard deviation of 25 sec, so $\mu = 145, \sigma = 25$ .