What is the value of x?

Mathematics

1 answer:

Alecsey [184]3 years ago

6 0

Answer: x = 8

Step-by-step explanation:

Using The Pythagorean theorem (a^2 + b^2 = c^2) we can find A or In This Case X

Plug In The Numbers:

x^2 + 6^2 = 10^2

simplify

x^2 + 36 = 100

Next, Since Were Trying To Find X And Not C, We Subtract B From C Or 36 From 100

x^2 + 36 - 36 = 100 - 36

simplify

x^2 = 64

Next, To Get Rid Of The Square, Were Going To Find The Square Root Of Both Sides Of The Equation

sqr/a = sqr/64

simplify

x = 8

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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 $\mu = 145, \sigma = 25$ .