Given that D( x ) = 2 x , select all of the following that are true statements.


D( x ) is a direct variation.
D( x ) is a function.
D( x ) is a rule for the set of points (5, 10), (6, 12) and (-2, -4).
x is the dependent variable.
D(6) = 3

Answers

Answer 1

Answer:

3rd

Step-by-step explanation:

Answer 2

Answer:

D(x) is a function. TRUE. It is a function of x.

x is the dependent variable. FALSE. x is the independent variable because the function is expressed in terms of the independent variable.

D(6) = 3. FALSE. D(6) = 2(6) = 12. D(6) should be equal to 12.

D(x) is a direct variation. TRUE. This holds true to the definition of direct variation where one variable is related to the other variable at the same constant multple. In this case, it is 2.

D(x) is a rule for the set of points (5, 10), (6, 12) and (-2, -4). TRUE. If you replace x with the first coordinate, the function would be equal to the corresponding second coordinate.

Step-by-step explanation:


Related Questions

What is the value of y?
Enter your answer in the box.
Round your final answer to the nearest whole number.

Answers

Answer:

I hope this helps! The answer is 9. I solved this by using “sin” to find y.

Step-by-step explanation:

pls help due soon !!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Answer: B) 12.5

Step-by-step explanation:

In a box-and-whisker plot, the first line(dot) is the smallest value, the second line is the first quartile, the third line is the median, the fourth line is the third quartile, and the last line(dot), is the maximum.

Hope it helps :D

Pls, help me if you are the smartest math person in your class!

Answers

Step-by-step explanation:

a. spending

b. john,60 collin,80

c. six

d. four

e. COULDNT READ THAT QUESTION

f. on day two

g. forty dollars

1.3.2 - Harry has a 14 foot pole. He cuts off 4 1/2 feet of it and then cuts off
another 2 %s foot section. How big in the pole now?h

Answers

Answer:

9.31 is what I got

So 9.31 feet

Step-by-step explanation:

f(x) = 2x3 + 5x2 - 6x - 7
g(x) = 2x - 3
Find (f - g)(x).

Answers

Step-by-step explanation:

its C. cause if f -g is equal to positive 4

Option B(f - g)(x) = [tex]$2x^{3} +5x^{2}[/tex] - 8x - 4  is correct.

We have the following functions -

f(x) = [tex]2x^{3} +5x^{2} -6x-7[/tex]

g(x) = 2x - 3

We have to determine (f - g)(x).

Define function in Mathematics.

In mathematics, a function from a set X to a set Y assigns to each element of X exactly one element of Y. The set X is called the domain of the function and the set Y is called the codomain of the function.

According to the question, we have -

f(x) = [tex]2x^{3} +5x^{2} -6x-7[/tex]

g(x) = 2x - 3

Now -

(f - g)(x) = {[tex]$2x^{3} +5x^{2} -6x-7[/tex] - (2x - 3)}

(f - g)(x) = {[tex]$2x^{3} +5x^{2}[/tex] - 6x - 7 - 2x + 3}

(f - g)(x) = [tex]$2x^{3} +5x^{2}[/tex] - 8x - 4

Hence, Option B(f - g)(x) = [tex]$2x^{3} +5x^{2}[/tex] - 8x - 4  is correct.

To solve more questions on Combination of functions, visit the link below -

https://brainly.com/question/14026860

#SPJ2

Ask a skateboarder a question

Answers

What does the bottom of your board say ?

Are you good at surfing? Is it similar to skateboarding?

a map is drawn using a scale of 1cm/80 mi. two cities are 280 miles apart
how far apart are the cities on the map

Answers

Answer:

the cities are 3.5 cm apart.

Step-by-step explanation:

all you have to do is divide 280/80

What is the equation of a line when m = -3 and b = 5?​

Answers

Answer: y=-3x+5

Step-by-step explanation:

The slope intercept form is y=mx+b

Substitute m and b

the equation for slope should be y = mx + b, hope this helps! :)


A store sells comic books. Each comic book costs the same amount. During a sale, the store reduces the price of each comic book by $1.45. Miguel
spends $12.88 on 2 comic books at the sale price

Answers

Answer:

the original price is $7.89

the price on sale is $6.44

i hope this helps

Step-by-step explanation:

divide $12.88 by 2 to get the price of one of those comic books on sale which gives you $6.44

if you want the original price you just add $1.45 to $6.44 and then thats the price before the sale.

A recipe for bread calls for 4 cups flour for every 2 teaspoons of salt. If you have 16 teaspoons of salt, how many cups of flour do you need?

Answers

Answer:

I think the answer is 30. Hope this helps!

Step-by-step explanation:

3 1/3+(-2 1/4)+1 5/6

Answers

Exact Form:
35/12
Decimal Form:
2.916
Mixed Number Form:
2 11/12

Find the slope of the line passing through the points(-3, 7) and (2, -6).

Answers

Answer:

-13/5

Step-by-step explanation:

The formula for slope is [ y2-y1/x2-x1 ].

-6-7/2-(-3)

-13/5

Best of Luck!

Find the LCM of 156 and 224.Find the LCM of 156 and 224.Find the LCM of 156 and 224.Find the LCM of 156 and 224.Find the LCM of 156 and 224.Find the LCM of 156 and 224.Find the LCM of 156 and 224.Find the LCM of 156 and 224.Find the LCM of 156 and 224.Find the LCM of 156 and 224.Find the LCM of 156 and 224.Find the LCM of 156 and 224.

Answers

Answer:

8736

Step-by-step explanation:

The LCM of 156 and 224

First find the highest common factor between the two number

156 = 4 * 39

224 = 4 * 56

Since 4 is the highest common factor between both numbers, the LCM of 156 and 224 will be the product of the highest common factor and the other multiples that are left when the numbers are divided by the highest common factor.

As such, the LCM of 156 and 224

= 4 * 39 * 56

= 8736

Answer:

8736

Step-by-step explanation:

The LCM of 156 and 224

First find the highest common factor between the two number

156 = 4 * 39

224 = 4 * 56

Since 4 is the highest common factor between both numbers, the LCM of 156 and 224 will be the product of the highest common factor and the other multiples that are left when the numbers are divided by the highest common factor.

As such, the LCM of 156 and 224

= 4 * 39 * 56

= 8736

what is the answer to this sqrt{243}

Answers

Answer:

It is 9√3 and in decimal form it's 15.58845726

Step-by-step explanation:

Answer this plzz
Can you try this question

Answers

Answer:

1. unlikely

2. likely

Answer: 1: Unlikely and 2. Certain...  (nothing is impossible)

What is the value of y=6−4x when x=2?

Answers

Answer:

y = -2

Step-by-step explanation:

You substitute 2 as x, y = 6 - 4 * 2, which is y = 6 - 8 = -2.

18 MB downloaded in 15
seconds

Answers

Answer:

what?? what is your question

Step-by-step explanation:

Answer: 1.2

Step-by-step explanation: Simply divide 18 by 15, and you will get 18/15=1.2

are these triangle obtuse or acute using the pythagorean theorem?

Answers

Answer:

they are acute triangles and right triangles

Step-by-step explanation:

Need help HMI 10th Geometry

Answers

i think it’s 6 but yea
also have a great day
brainiest plz?

2x + 3y = -4
y=x+4
What is the solution to the system of linear equations?

Answers

Answer:

Step-by-step explanation:

2x+3y=-4

-x+y=4  /*2

2x+3y=-4

-2x+2y=8

5y=4

y=4/5

x=y-4=4/5-4= - 3.2

what is the y intercept of
y=5x-8

Answers

Answer:

-8

Step-by-step explanation:

The equation is written in the form y=mx+b, where m is the slope and b is the intercept. So here the intercept is -8.

(PLEASE HELP WILL GIVE BRANLIEST!!!)
An elevator in a high-rise building moves upward at a constant rate. The table shows the height of the elevator above the ground floor after various



The function that models the
table of values is f(t) =

where "t" is the =

and f(t) is the=

determine the height, in feet, of the elevator at 14 seconds

Answers

Answer:

168

Step-by-step explanation:

Katrina is going to order sweatshirts for her girls mentoring group. The sweatshirts will have the group logo printed on the front. Katrina asks two local companies to give her a price.
• MH Designs will charge $21.50 for each of the sweatshirts.
• Print Rich will charge $18 for each sweatshirt plus a one-time setup cost of $70.
Justify how to determine the number of sweatshirts Katrina would need to order from
each company for the costs to be the same.

Answers

Answer:

Katrina would need to buy 20 sweatshirts.

Step-by-step explanation:

The number of sweatshirts Katrina would need to order from  each company can be determined by forming the linear equation in two variables.

Given :

Katrina is going to order sweatshirts for her girl's mentoring group.Katrina asks two local companies to give her a price.MH Designs will charge $21.50 for each of the sweatshirts. Print Rich will charge $18 for each sweatshirt plus a one-time setup cost of $70.

Let the number of sweatshirts orders from company MH Designs be 'x' and the number of sweatshirts orders from company Print Rich be 'y'.

So, the cost for ordering the sweatshirt from the company MH Design is:

[tex]21.50x = c[/tex]

Now, the cost for ordering the sweatshirt from the company Print Rich is:

18y + 70 = c'

Given that the number of sweatshirts Katrina would need to order from  each company for the costs to be the same. So :

21.5x = 18y + 70

Now, put the value of x and y so, that in the above equation, both sides become equal.

For more information, refer to the link given below:

https://brainly.com/question/2263981

the manager of a symphony computes that the symphony will earn -40p^2+1100p dollars per concert if they charge P dollars for tickets. what ticket price should the symphony charge in order to maximize its profits?

Answers

Answer:

$7,562.5

Step-by-step explanation:

Given the function of the profit earned expressed as;

f(p) =-40p^2+1100p

To maximize the profit, df(p)/dp must be sero

df(p)/dp = -80p + 1100 = 0

-80p + 1100 = 0

-80p = - 1100

p = 1100/80

p = 13.75

Substitute p = 13.75 into the function

f(13.75) =-40(13.75)^2+1100(13.75)

f(13.75) = -7,562.5+15,125

f(13.75) = 7,562.5

Hence the symphony should charge $7,562.5 to maximize the profit.

A snow cone Machine priced at $139 is on sale for 20% off the sales tax rate is 6.75% what is the price of the snowcone machine after the discount and sales tax?

Answers

Answer:

100-20=80

80+ 6.75 = 86.75

139/100 X 86.75 = 120.5825

$120.58

Plz help will give brainest

Answers

Answer:

3

Step-by-step explanation:

Area of a triangle equals bh/2. Therefore, the base which is 5.25 *3 = 15.75. 15.75/2 = 7 and 7/8.

3 will be your answer have a great day

can yalll help me with this is due today

Answers

I’m pretty sure the answer is “axis of symmetry”, hope this helped! :)

Answer:

the answer is axis of symmetry

Step-by-step explanation:

symmetry technically means perfectly in half. one side is the same as the other.

Solve for x: -9 = 2x - 5 help plsss

Answers

Answer:

x = -2

Step-by-step explanation:

Answer:

x=-2

Step-by-step explanation:

Mrs. Walters drove 360 miles on 25 gallons of gas. Mr. Walters drove 480 miles on 32 gallons of gas.
b. Find the mileage per gallon for Mr. Walters's car.

Please explain how you got this answer

Answers

Answer:

Mr.Walters car can go 15 miles on one gallon of gas.

Step-by-step explanation:

To find this, you first want to put it into a ratio.

480:32

Next, you want to divide.

480/32

After you divide, you get 15. That tells you that you get 15 miles off of one gallon of gas.

Answer:

15 miles

Step-by-step explanation:

Explain how to get the variable alone in the equation. 3x = 24​

Answers

Answer:

to get rid of the 3 on the x you have to divide it by 3. whatever you do to one side you have to do to the other side so the answer would be x=8

Step-by-step explanation:

Answer:

x = 8

Step-by-step explanation:

To get the variable alone you would divide both sides by 3. You do this because 3 is a common factor that both 3 and 24 have. Once you divide 3 on each side, you have x = 8 as your final answer.

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