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2 years ago

For the quadratic function below, what is the rate of change over the interval.

Mathematics

1 answer:

Darya [45]2 years ago

5 0

Answer:

Step-by-step explanation:

Intervals are always x values. When x = 5, y = 4 (look at the graph to se this); when x = 6, y = 2. The rate of change is the same thing as the slope. We can't get an exact slope here because this isn't a straight line, but we can find the average rate of change. We use the slope formula to do this: with the coordinates (5, 4) and (6, 2):

$m=\frac{2-4}{6-5}=\frac{-2}{1}=-2$ . Third choice down is the one you want.

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1. Consider the chance experiment of selecting an adult at random from the sample. The number of credit cards is a discrete rand

Fantom [35]

Answer:

See the explanation below.

Step-by-step explanation:

Assuming the distribution table given:

X ( Number od Credit Cards) Relative frequency

0 0.26

1 0.17

2 0.12

3 0.10

4 0.09

5 0.06

6 0.05

7 0.05

8 0.04

9 0.03

10 0.03

We can create the histogram for this data using the following code in R:

> x<-c(0,1,2,3,4,5,6,7,8,9,10)

> freq<-c(0.26,0.17,0.12,0.10,0.09,0.06,0.05,0.05,0.04,0.03,0.03)

> x1<-c(rep(0,26),rep(1,17), rep(2,12),rep(3,10), rep(4,9),rep(5,6),rep(6,5),rep(7,5),rep(8,4),rep(9,3),rep(10,3))

> hist(x1,breaks = x,main = "Histogram", ylab = "%", xlab = "Number of credit cards")

And we got as the result the figure attached. We see a right skewed distribution with majority of the values between 0 and 3

5 0

2 years ago

I need help with that question please

Artemon [7]

C is the correct answer

8 0

2 years ago

Read 2 more answers

Linda purchased a used vehicle that depreciates under a straight line method. The initial value of the car is $7000, and the sal

makvit [3.9K]

Answer:

The value at the end of year 2 is $4400.

Step-by-step explanation:

The best approach here is to determine the expression for the line depreciation and then calculate the depreciation value at x = 2 years.

A line is given by

$y = mx + b$

where m is the slope and b the bias (aka y-intercept). You can determine both directly from what is given. The slope is change in y divided by change in x. We know that over 5 years the car loses (500-7000)=-6500 in value. So, the slope is m=-6500/5 (note the negative sign). At time 0, the y-intercept is 7000, since that is the initial value (at year 0). So our line function is fully identified:

$y = -\frac{6500}{5}x+7000$

and gives you the value of the car in any given year. To answer the question, we now plug in 2 as value of x:

$y=-\frac{6500}{5}\cdot 2 + 7000= 4400$

3 0

2 years ago

Read 2 more answers

If the radius of the circle is 9, find the area of the shaded region. Round your

zmey [24]

Answer:

we dont know the shaded area...

Step-by-step explanation:

6 0

2 years ago

Evaluate the expression.

Katarina [22]

Answer:

Step-by-step explanation:

The lines on the outside simply means "absolute value". This just takes any negative number and makes it positive. In this case, 15-4 is already positive so the answer is just positive 11.

4 0

1 year ago