All categories

3 years ago

Which of the following are true about the graph of f(x)=−4x2? Select the TWO that apply.

Mathematics

1 answer:

alekssr [168]3 years ago

6 0

the answer is A and D

when you differentiate the question you find that the maximum point is (0,0)i.e

$\frac{dy}{dx} = - 8x$

when dy/dx is 0 values of x are 0,0

and the function shows that valies of x are real numbers.

You might be interested in

Harry buys a waffle maker priced at $48. If the sales tax is 9%, how much tax will Harry pay?

Klio2033 [76]

Answer:

2325

Step-by-step explanation:

Kkkkkkkkjajahaaj

8 0

3 years ago

Which of the following is an assumption of the independent-samples t test, but not an assumption of the one-sample t test?

Harlamova29_29 [7]

The answer is d for sure

6 0

4 years ago

Scientists randomly select ten groups from a population of men over 50 years old. They calculate the mean weights of each of the

vfiekz [6]

Answer:

Notice that the subjects of the study are men over 50 years.

So, you need to consider that each subject is a different person with different weight and other different characteristics that determine that weight.

If we have 10 groups randomly selected, that means there's gonna be variability, otherwise, the study wouldn't make sense.

So, if each person is different, then their weights is gonna be different, giving different means.

It would be rare if both means result equal, beacuse that would mean the subjects had the same weight.

Therefore, the variability between these means can be best attributed to the variability of subjects, the difference between each person.

From a numerical perspective, the variability is attributed to the spread of the data group, that is, if there is too much difference between weights, the variabilty will increase.

8 0

3 years ago

A shoreline is eroding at a rate of 1/3 foot per 3 months. How many feet are eroding per year?

Charra [1.4K]

1 1/3 feet

Have a great day!

7 0

3 years ago

On highway 77, the Dobson exit is halfway between the Mt. Airy exit and the Elkin exit. If the Elkin exit is located at (-5,-2)

Leya [2.2K]

Given :

The Dobson exit is halfway between the Mt. Airy exit and the Elkin exit. If the Elkin exit is located at (-5,-2) and the Dobson exit is located at (-1,4).

To Find :

How far is it from the Elkin exit to the Mt. Airy exit.

Solution :

E(-5,-2) , D(-1 ,4 ) .

It is also given that Dobson exit is halfway between the Mt. Airy exit and the Elkin exit.

Let , location of Elkin exit is A(h,k) .

So , point D in terms of A and E is given by :

$(\dfrac{h-5}{2},\dfrac{k-2}{2})$ .