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olasank [31]
2 years ago
5

What is the perimeter of a triangle with side lengths of 5 cm, 8 cm, and 9 cm?

Mathematics
1 answer:
IrinaVladis [17]2 years ago
7 0
The answer is 22 cm, you just add up all the sides when doing perimeter
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If X=2 Y=3 then, xy^2
Agata [3.3K]

Answer:

18

Step-by-step explanation:

2 x 3^2

2 x 9

18

3 0
3 years ago
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A particular battery claims to have a mean life of 400 hours with a standard deviation of 30 hours. Approximately what percent o
Svetach [21]

Using the normal distribution, it is found that 25.14% of the batteries will last more than 420 hours.

<h3>Normal Probability Distribution</h3>

The z-score of a measure X of a normally distributed variable with mean \mu and standard deviation \sigma is given by:

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

  • The z-score measures how many standard deviations the measure is above or below the mean.
  • Looking at the z-score table, the p-value associated with this z-score is found, which is the percentile of X.

In this problem, we have that the mean and the standard deviation are given, respectively, by:

\mu = 400, \sigma = 30.

The proportion of the batteries will last more than 420 hours is <u>one subtracted by the p-value of Z when X = 420</u>, hence:

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

Z = \frac{420 - 400}{30}

Z = 0.67

Z = 0.67 has a p-value of 0.7486.

1 - 0.7486 = 0.2514.

0.2514 = 25.14% of the batteries will last more than 420 hours.

More can be learned about the normal distribution at brainly.com/question/24663213

#SPJ1

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2 years ago
Help!!!! If you wanted to model movements with both of the robot's arms in the air, what function
mixas84 [53]

Answer:

f(x)=x^2

Step-by-step explanation:

if you wanted have a function where both of the robot's arms are in the air the function could be x to the power of any even number such f(x)=x^2, f(x)=x^4, f(x)=x^6, or even f(x)=x^10. And you could still do the same transformations with these equations.

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All real numbers greater than or equal to -3
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Choose the correct response ​
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74 hope this works if not I'm sorry

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