Using complete math and English sentences; use your available resources ( citation to explain ) How to simplify the following radical expression>>>
√-48

We get that √48 = 2⋅2√3. Lastly, step three says to simplify, so we go ahead and multiply the 2⋅2 outside of the square root to get 4√3. That's it! We get that √48 = 4√3.

Step-by-step explanation:

The expected repair cost is $3.73.

Step-by-step explanation:

The random variable X is defined as the number of defectives among the 4 items sold.

The probability of a large lot of items containing defectives is, p = 0.09.

An item is defective irrespective of the others.

The random variable X follows a Binomial distribution with parameters n = 9 and p = 0.09.

The repair cost of the item is given by:

Compute the expected cost of repair as follows:

Compute the expected value of X as follows:

The expected value of X is 0.36.

Compute the variance of X as follows:

The variance of X is 0.3276.

The variance can also be computed using the formula:

Then the formula of is:

Compute the value of as follows:

The expected repair cost is:

Thus, the expected repair cost is $3.73.