when looking at an equation, how do you know if it has direct variation​?

Answers

Answer 1
Answer: A direct variation is when x and y (or f(x) and x) are directly proportional to each other... For example, if you have a chart that says x and y, and in the x column is 1, 2 and 3, and the y column says 2, 4 and 6... then you know it's proportional because for each x, y increases by 2.

Hope this helps (:

Related Questions

Solve the following proportion for x.

X/13 = 17/7

Round your answer to the nearest tenth.

Answers

Answer:

31.6

Step-by-step explanation:

x / 13 = 17 / 7

7x = 221

x = 221 / 7

x = ~31.6

Jane bought 1.25 pounds of turkey. One pound of turkey costs $5.20. Before tax, how much did Jane pay for the turkey?

Answers

Answer:

5.408

Step-by-step explanation:

1=5.20

0.25=408

HELP PLEASE!
Could someone give me the answer ASAP since it is due very soon please! Thank you :)

Answers

Answer:

27/8

Step-by-step explanation:

3 3/8

you multiply the denominator by the whole number and then add into numerator. so

8 x 3 = 24

           24+ 3 =27

Answer= 27/8

27/8 have a good rest of your day, good luck

4 cm
5 cm
6 cm
6 cm
Which is the surface area of the pyramid?

Answers

Answer:

96

Step-by-step explanation:

The pyramid formula: A = 6(6) + 6[tex]\sqrt{x} (6/2)^2 + 4^2 + 6 \sqrt{x} (6/2)^2 + 4^2[/tex]

Solve that to get you A = 96

Someone plz help me with this 2 questions I will give brainliest
(Look at the pictures)

Answers

Answer:

61 ounces

Step-by-step explanation:

1 pound = 16 ounces

8 pound 3 ounces = 8*16 + 3 = 128 +3 = 131 ounces

No Jesse's weight = 12 pounds = 12*16 = 192 ounces

Weight gained = 192 - 131 =  61 ounces

0.25x+7.5=15 Explain or show each step.

Answers

Answer:

x = 30

Step-by-step explanation:

So, you want to get 'x' by itself

0.25x + 7.5 = 15

           - 7.5   -7.5

0.25x = 7.5

---------   ------

0.25     0.25

x = 30

0.25x+7.5=15
subtract 7.5 from 15
0.25x=7.5
divide 7.5 by 0.25 to get (x) by itself.

x=30

A music collection includes 19 ROCK CDs, 12 COUNTRY CDs, 6 CLASSICAL CDs, and 5 HIP HOP
CDs. What is the probability that a CD randomly selected from the collection IS NOT a classical
CD?(answer as simplified fraction)

Answers

Answer:

the answer is 6/7.

you're welcome.

A racecar driver completes a race 30 laps in 15 minutes at a constant speed. what is the driver's speed?

Answers

Answer:

200 mph/321 km/h if the track is 1 mile long and 100 mph/160 km/h if the track is 2 miles long

Step-by-step explanation:

A 7-meter roll of white paper costs $1.65. What is the unit price, rounded to the nearest cent?​

Answers

Answer:

$0.24 per meter

Step-by-step explanation:

Alright so to find the unit rate divide 1.65 by 7

1.65/7=0.2357142857142857...

So round it to the nearest cent

0.24

What is the value of the expression 22 + 62 ÷ 22? (1 point)

Answers

Answer: 22+62÷22

22+2.8181

24.8181

So 22+62÷22 is about 24.8181

hope this helps have a nice day❤️❤️❤️

Step-by-step explanation:

Answer:

22.73

Step-by-step explanation:

22+62=84

84/22=22.7380952381

14. Write the equation in slope-intercept form that passes through the two points.

(1, 2) and (3,-8) ​

Answers

Answer: y=5x+7

Step-by-step explanation:

If you draw a graph or use a graphing calculator the points and then connect them you will see that the y-intercept is 7 and the slope is 5/1. Slope intercpt  form is y=mx+b. So the equation is y=5x+7.

Answer:

let (x1,y1)=(1, 2)

and(x2,y2)=(3,-8)

Step-by-step explanation:

we have

y-y1=(y2-y1)(x-x1)/(x2-x1)

y-2=(-8-2)(x-1)/(3-1)

y-2=-10(x-1)/2

y-2=-5(x-1)

y-2=-5x--5

y+5x=5+2

5x+y=7 is the required equation.

note :-×-=+

Find the area of each. Use your calculator's value of p. Round your answer to the nearest tenth.
will mark as brainiest

please

Answers

Step-by-step explanation:

22/7*9*9=254.5714286

evaluate : ( -3/4 ) 2 pls and thank youu

Answers

Answer:-1.5

Step-by-step explanation:

First, -3/4 = -0.75

Second, -0.75 divided by 2 is -1.5

Circle all of the equations
that are nonlinear.
A. y = 5 + x
B. xy = 4
C. y = 7x4
D. 2x - y = 8

Answers

Answer:

B and C

Step-by-step explanation:

Just not linear lol

Plz Help Its Math and very confusing! (Btw this is her lil sister alexis!) Don't tell her i don't have this link so i use her brainly???

Answers

Answer:

Step-by-step explanation:

Round the ratio 4:8

to 5 then divide (/), =51

Kathy wants to paint the faces of her standard six-sided die so that each face is either red or blue. However, she does not want all of the faces to be the same color. How many ways are there for Kathy to paint her die?

Answers

Answer:

The number of ways Kathy can paint her die is 52 ways

Step-by-step explanation:

The permutation and combination related question is answered as follows;

The number of faces in the six-sided die = 6

The number of colors available for painting the six-sided die = 2 colors

Therefore, we have, the total number of ways Kathy can paint her die, 'n', given as follows;

n = ₆P₂ + 2₄P₄ + 2₄P₃ + ₄P₂

Where;

₆P₂ = The number of ways of arranging 2 objects in 6 spaces = 30

₄P₄ = The number of ways of arranging 4 objects in 4 spaces = 1

₄P₃ = The number of ways of arranging 3 objects in 4 spaces = 4

₄P₂ = The number of ways of arranging 2 objects in 4 spaces = 12

∴ n = 30 + 2×1 + 2×4 + 12 = 52

The number of ways Kathy can paint her die, n = 52 ways.

You are told that you will have to wait 5 hours in a line with a group of other people. Can you determine the number of people waiting in the line?

Answers

Answer:

No

Step-by-step explanation:

We don't know how many thier people there are and we don't know how long until a person gets through

Can the sides of a triangle have lengths 1, 4, and 5?

Answers

Answer:

No, it can't. The sum of any two sides must be bigger than the third side to form a triangle.

Step-by-step explanation:

1+4 = 5

There is a bag filled with 2 blue, 4 red and 5 green marbles. A marble is taken at random from the bag, the colour is noted and then it is replaced. Another marble is taken at random. What is the probability of getting 2 different colours?

Answers

Answer:

58.5% (94886869494949)

Step-by-step explanation:

EZ math. (but take note of my username)

The perimeter of a quadrilateral garden is 4x2+3x-4. The first side is represented by x2+2x+15. The second and third sides are each represented by x2-x-10. What expression represents the fourth side? Write a justification of your result.

Answers

Answer:

[tex]y = x^{2} + 3x + 1[/tex]

Step-by-step explanation:

Perimeter equals the sum of the lengths of the sides.

Let y = the length of the fourth side

[tex]4x^{2} + 3x - 4 = x^{2} + 2x + 15 + x^{2} -x - 10 + x^{2} - x - 10 + y[/tex]

[tex]4x^{2} + 3x - 4 = 3x^{2} - 5 + y[/tex]

[tex]x^{2} + 3x + 1 = y[/tex]

Do ACT score reports come in the mail?

Answers

Answer: Yes

Step-by-step explanation:

They usually come in three months after you take the test. I think I got mine in the middle of May.

A boat travels 438 km in 8 hours (with a constant speed). How far can it travel in 5 hours (with the same speed

Answers

The distance that the boat can travel in one hour
=438km/8h
=54.75km/h
The boat can travel in 5 hours
=(54.75*5)km
=273.75km

How much interest will Jamal owe when he graduates from college if he took out a $2,500 student loan during his last year of college? The interest rate was 5 percent and payments were deferred during that year

Answers

I’m not smart and I’m not saying its right but 50,000

Please help will give Brain

Answers

Step-by-step explanation:

AB=DC

-x+6 = 3x-14

4x= 20

x= 5

AB=1

DC=1

Arthur’s dinner bill totaled $13.72, before sales tax and tip.

Sales tax at the restaurant is 5.8%.
After sales tax, he left a 15% tip.
What was Arthur’s total bill, including sales tax and tip?
A.13.84
B.14.52
C.15.78
D.16.70

Answers

Answer:

16.70

Step-by-step explanation:

i am sure this is the correct answer 100 percent sure

the answer is D) 16.69

Identify the slope and y-intercept of the graph of the equation. y =3/5 x + 1

Answers

Answer:

slope = 3/5

y intercept = 1

Step-by-step explanation:

i think

Answer:

Slope: 3/5

Y-int: 1

Step-by-step explanation:

Slope intercept form is y=mx+b, with m being the slope being the y-int. So, m is 3/5 and b is 1 in the equation.

(hope this helps :P)

*PLEASE ANSWER!!*

Denise and her family go out to dinner at a restaurant. The bill is $100. They leave a 20% tip for the server. How much money do they tip?

a.) $12

b.) $20

c.) $10

Answers

The answer would be B because 20% of 100 is 20
The answer to your question is b

Mutiply Fractions and Whole Numbers

9 x 2/3

Explain your work

Answers

Answer:

18/3 or 6

Step-by-step explanation

9/1 and 9 is the same thing and because we are multiply fractions you add the 9/1 so it makes 9/1 x 2/3.

9/1 x 2/3 = 18/3

18/3 = 6

Hope it makes sense!  

Answer:

Ans: 5.94

Step-by-step explanation:

according to bodmas,

we should solve division first then

multiply it with 9.

So,

= 9 × 2/3

= 9 × 0.66

= 5.94 ~ 6(approx)

what is 18.6% of 11,400​

Answers

11400x0.186=2120.4 .

What is the slope of the line that passes through the points (5, 17) and (2,5)?​

Answers

5-17 -12
—— = ——- = 4
2-5 -3


slope is 4 or 4/1
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