Ask question

Ask question

All categories

VladimirAG [237]

3 years ago

12

We want to factor the following expression: (x+7)^2+2y(x+7)+y^2 which patter can we use to factor the espression? U and V are ei

ther constant integers or single-variable expressions.
A. (U+V)^2 or (U-V)^2
B. (U+V)(U-V)
C. We can’t use any of the patterns.

1 answer:

Lostsunrise [7]3 years ago

5 0

Answer:

A. (U+V)^2 or (U-V)^2

Step-by-step explanation:

You might be interested in

Barron's reported that the average number of weeks an individual is unemployed is 17.5 weeks. Assume that for the population of

Olin [163]

Answer:

$P(16.5$

And using the normal standard table or excel we find the probability:

$P(-1.768< Z< 1.768) = P(Z$

Step-by-step explanation:

Previous concepts

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The Z-score is "a numerical measurement used in statistics of a value's relationship to the mean (average) of a group of values, measured in terms of standard deviations from the mean".

Solution to the problem

Let X the random variable that represent the avergae number of weeks an individual is unemployed of a population, and for this case we know the distribution for X is given by:

$X \sim N(17.5,4)$

Where $\mu=17.5$ and $\sigma=4$

Since the distribution for X is normal then, the distribution for the sample mean $\bar X$ is given by:

$\bar X \sim N(\mu= 17.5, \frac{\sigma}{\sqrt{n}}= \frac{4}{\sqrt{50}}=0.566)$

We select a sample of n =50 people. And we want to find the following probability

$P(16.5$

And using the normal standard table or excel we find the probability:

$P(-1.768< Z< 1.768) = P(Z$

4 0

4 years ago

An electrician has a piece of wire that is 4 and 3/8 cm long.

krek1111 [17]

35/8 = 4.376 5/3 = 1.666… 4.376/1.666…
Therefore 2.625 pieces

6 0

3 years ago

If 3 marbles are drawn from a bag of 12 marbles consisting of three red, four white and five blue, without returning them to the

FinnZ [79.3K]

Answer:

The probability of that happening is 1/22

Step-by-step explanation:

In order to find the probability, you need to start by finding the probability for each step. The probability of the first one being red is the number of red marbles divided by the total number of marbles.

3 red / 12 total.

3/12

1/4

Now the chance that the second is white is the total number of white marbles divided by how many are left in the bag.

4 white / 11 left

4/11

Lastly, the chance of the last one being blue is the number of blue marbles divided by the amount of total marbles left after two pulls.

5 blue/ 10 left

5/10

1/2

Now to find the overall probability of all 3 happening, we multiply all 3 probabilities together.

1/4 * 4/11 * 1/2 = 1/22

7 0

3 years ago

Follow the steps to simplify this expression.

alexira [117]

Answer:

3x-9 is the answer on edgenuity:)

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Heeelpp mee please !!!!!

mario62 [17]

Answer:

210 yd²

Step-by-step explanation:

If we rotate the shape we get a right angle triangle with a hypotenuse of 29 yd :

The area of a right angle triangle is given by the formula :

A = $\frac{ab}{2}$

Substituting the 2 values given in diagram gives us :

A = $\frac{(20)(21) }{2}$ = 420÷2 = 210

Our units will be yd² as we are dealing with area

4 0

2 years ago