7(x -2) + 3(x + 2) = 5(x

Which of the following are incorrect expressions for slope?

vfiekz [6]

Answer:

Option B and C are correct.

$\frac{x_2-x_1}{y_2-y_1}$

$\frac{run}{rise}$ are the expression incorrect for slope

Step-by-step explanation:

Slope is defined as the change in the dependent variable relative to the change in the dependent variable

or the ratio of the horizontal changes to vertical changes between any two points on the graph of the line.

The vertical changes between any two points is rise

The horizontal changes between any two points is run.

Formula for slope is given by:

For any two points $(x_1, y_1)$ and $(x_2, y_2)$

then slope is:

$\text{Slope} =\frac{rise}{run}= \frac{y_2-y_1}{x_2-x_1}$

or we can write this as:

Δy = $y_2-y_1$

Δx = $x_2-x_1$

⇒ $\text{Slope} = \frac{\triangle y}{\triangle x}$

Therefore, the expression which are incorrect for slope are;

$\frac{x_2-x_1}{y_2-y_1}$

$\frac{run}{rise}$

8 0

3 years ago

Read 2 more answers

If t and s are inversely proportional and t = 4 when s = 40, then what is t when s = 80?

Paraphin [41]

Answer:

8

Step-by-step explanation:

5 0

2 years ago

Read 2 more answers

You are asked to do a study of shelters for abused and battered women to determine the necessary capacity in your city to provid

ohaa [14]

Answer:

Using the normal probability distribution, with a capacity of 350, it is enough for all abused on 90.82% of nights.

274 shelters will be needed.

Step-by-step explanation:

Problems of normally distributed samples are 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:

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

The Z-score measures how many standard deviations the measure is from the mean. 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, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

$\mu = 250, \sigma = 75$

If the city’s shelters have a capacity of 350, will that be enough places for abused women on 95% of all nights?

What is the percentile of 350?

This is the pvalue of Z when X = 350.

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

$Z = \frac{250 - 150}{75}$

$Z = 1.33$

$Z = 1.33$ has a pvalue of 0.9082.

Using the normal probability distribution, with a capacity of 350, it is enough for all abused on 90.82% of nights.

If not, what number of shelter openings will be needed?

The 95th percentile, which is X when Z = 1.645. So

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

$1.645 = \frac{X - 150}{75}$

$X - 150 = 1.645*75$

$X = 274$

274 shelters will be needed.

5 0

3 years ago

Find the diameter of a circle with an area of 400cm squared.

Furkat [3]

11.28 cm is the answer to this problem.

3 0

4 years ago

Qual son los pares de 48

lyudmila [28]

Answer:

1

2

3

4

6

8

12

16

24

48

Step-by-step explanation:

Es un proceso de dos pasos para crear todos los pares de factores de 48: Primero, enumeramos todos los factores de 48. Luego, combinamos todas las diferentes combinaciones de factores para obtener todos los pares de factores de 48.

Todas las diferentes combinaciones de pares de los factores de 48 anteriores son los pares de factores de 48. A continuación se muestra la lista de todos los pares de factores de 48. Como puede ver, todos los pares de factores de 48 equivalen a 48 cuando los multiplica

It is a two-step process to create all the Factor Pairs of 48: First, we list all the factors of 48. Then, we pair all the different combinations of factors to give you all the Factor Pairs of 48.

All the different pair combinations from the factors of 48 above are the Factor Pairs of 48. Below is the list of all the Factor Pairs of 48. As you can see, all Factor Pairs of 48 equal 48 when you multiply them together.

8 0

3 years ago

7(x -2) + 3(x + 2) = 5(x - 6)