I need help please I need to finish this week , with all the finals I have

Use the distributive property to create an equivalent expression. 4(9j + 1 + 6j)

Mariana [72]

Answer:12

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Determine the slope of y=3x^2-8 at (x,y)

romanna [79]

By definition, the slope of a curve is the rate of change of the independent and dependent variables. When graphed in a Cartesian plane, the slope between any two point on the curve is equal to Δy/Δx. However, we should not that only a linear function has a constant slope. For this problem, the equation is quadratic. Hence, you must specify the point where we should get the slope.

In calculus, the slope is the first derivative of the equation:

y=3x²-8
dy/dx = slope = 6x - 0

Thus, the slope at any point of the curve is 6x. For instance, you want to find the slope of the curve at point (1,1), then the slope is equal to 6(1) = 6 units.

8 0

3 years ago

The standard deviation tells us a. the average value of the scores. b. the relative standing of a particular score. c. the skewn

andreyandreev [35.5K]

We can say that the standard deviation tells us the dispersion of the scores, making option D the correct choice.

<h3>What is the standard deviation?</h3>

A standard deviation (or σ) is a measure of how widely distributed the data is about the mean (μ). A low standard deviation suggests that data is grouped around the mean, whereas a large standard deviation shows that data is more spread out. A standard deviation around 0 suggests that data points are close to the mean, whereas a high or low standard deviation indicates that data points are above or below the mean, respectively.

We use the following formula to compute the standard deviation:

$\sigma = \sqrt\frac{{\sum_{i=1}^{N}\left | x_i - \mu \right | }^2}{N}$

In this formula, σ is the standard deviation, $x_i$ is the data point in the set we are solving for, μ is the mean, and N is the total number of data points.