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igor_vitrenko [27]
3 years ago
5

How to you calculate the area of regular octagon? ​

Mathematics
1 answer:
Nataliya [291]3 years ago
6 0

Answer:

A = 2 (1 + √2) a^2

Step-by-step explanation:

a- one side of the octagon

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Translate and simplify the expression the sum of fifteen and a number plus twelve
mr Goodwill [35]
I think it might be 15n + 12 sorry if it’s not
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Battery packs in electric go-carts need to last a fairly long time. The run-times (time until it needs to be recharged) of the b
pav-90 [236]

Answer:

The minimum level for which the battery pack will be classified as highly sought-after class is 2.42 hours

Step-by-step explanation:

Problems of normally distributed samples are 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}

The Z-score measures how many standard deviations the measure is from the mean. 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, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 2, \sigma = 0.33

What is the minimum level for which the battery pack will be classified as highly sought-after class

At least the 100-10 = 90th percentile, which is the value of X when Z has a pvalue of 0.9. So it is X when Z = 1.28.

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

1.28 = \frac{X - 2}{0.33}

X - 2 = 0.33*1.28

X = 2.42

The minimum level for which the battery pack will be classified as highly sought-after class is 2.42 hours

4 0
3 years ago
Can someone please help solve 2-7!!! I will give brainliest!!!
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Question 2 is 19.4 I hope I helped!
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The Augello family is driving from Columbus to St. Louis at a constant rate of 65 miles per hour. The distance between the two c
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Answer:

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Step-by-step explanation:

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Where,

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b = y-intercept, which is the initial value or the distance between the cities = 420

Plug in the values into the slope-intercept equation, to represent the distance y in miles remaining after driving x hours. You would have:

y = -65x + 420

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2 years ago
What are the solutions of 3(x-4)(2x-3)=0
dexar [7]
3(x-4)(2x-3)=0
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