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3 years ago

Plsssssssss Help!!!!

Mathematics

2 answers:

Olenka [21]3 years ago

7 0

Answer:

16!

Step-by-step explanation:

10 for a day, 2 per hour x3 bc she had it for 3 hours so 16

DiKsa [7]3 years ago

7 0

Answer:

$15

Step-by-step explanation:

First you need to find out how much the first rental place will cost. 10 + 2*3 = $16. Now the second one. It costs 6 dollars initially, then $3 for every hour until the bike is returned. 6 + 3*3 = $15. I may have interpreted the equation wrong but I think this is it

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A random variable x follows a normal distribution with mean d and standard deviation o=2. It is known that x is less than 5 abou

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Answer:

The mean of this distribution is approximately 3.96.

Step-by-step explanation:

Here's how to solve this problem using a normal distribution table.

Let $z$ be the

$\displaystyle z = \frac{x - \mu}{\sigma}$ .

In this question, $x = 5$ and $\sigma = 2$ . The equation becomes

$\displaystyle z = \frac{5 - \mu}{2}$ .

To solve for $\mu$ , the mean of this distribution, the only thing that needs to be found is the value of $z$ . Since

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The problem is that the normal distribution tables list only the value of $P(0 \le Z \le z)$ for $z \ge 0$ . To estimate $z$ from $P(Z \le z) = 0.6985$ , it would be necessary to find the appropriate

Since $P(Z \le z) = 0.6985$ and is greater than $P(Z \le 0) = 0.50$ , $z > 0$ . As a result, $P(Z \le z)$ can be written as the sum of $P(Z < 0)$ and $P(0 \le Z \le z)$ . Besides, $P(Z < 0) = P(Z \le 0) = 0.50$ . As a result: