1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
shepuryov [24]
3 years ago
10

The variables x an y vary directly. When x=13, y=52. Which equation correctly relates x and y?

Mathematics
1 answer:
Lana71 [14]3 years ago
8 0

Answer:

The equation which correctly relates x and y is y = 4x

Step-by-step explanation:

The equation of the direct variation is y = k x, where

  • k is the constant of variation
  • To find the value of k, use the initial values of x and y

∵ The variables x and y vary directly

→ Use the form of the equation above

∴ y = k x

∵ When x = 13, y = 52

→ That means the initial values of x and y are 13 and 52

∴ x = 13 and y = 52

→ Substitute them in the equation above to find k

∵ 52 = k (13)

∴ 52 = 13k

→ Divide both sides by 13

∴ 4 = k

∴ The value of k is 4

→ Substitute it in the equation

∴ y = 4x

∴ The equation which correctly relates x and y is y = 4x

You might be interested in
Add<br>(4-4i)+(3-2i)<br>Write as complex number in standard form​
Viefleur [7K]

Answer: (4-4i)+(3-2i) = 7-6i

Step-by-step explanation:

To add or subtract two complex numbers, just add or subtract the corresponding real and imaginary parts. For instance, the sum of 4 -4i and 3 - 2i is 7 -6i. The numbers in standard form will be a + bi, where a is the real part and bi is the imaginary part.

8 0
3 years ago
Compare [3] and [ – 8|
mariarad [96]

Answer:

3 > -8

Step-by-step explanation:

-8 -7 -6 -5 -4 -3 -2 -1 <u>0</u> 1 2 3 ....

-8< 3

7 0
3 years ago
4. Two friends, Sequoia and Raven, sold organic chap sticks at the local market.
Nina [5.8K]

Answer:

Sequoia sold 2 chap sticks while Raven sold 4.

Step-by-step explanation:

Since two friends, Sequoia and Raven, sold organic chap sticks at the local market, and Sequoia sold her chap sticks for $ 4 and Raven sold hers for $ 3 each, and in the first hour, their total combined sales were $ 20, if in the first hour, the friends sold a total of 6 chap sticks between them, to determine the number of chap sticks each of the friends sold during this time the following calculation must be performed:

6 x 4 + 0 x 3 = 24

5 x 4 + 1 x 3 = 23

2 x 4 + 4 x 3 = 20

Therefore, Sequoia sold 2 chap sticks while Raven sold 4.

7 0
3 years ago
Selling Price is $2,640 and the Loss is $196. Find the Cost Price.​
myrzilka [38]
If I am correct, it should be $2,736.


if this is a re-sell, then you would have to add the loss to the selling price to get the original cost.

loss means how much was lost in profit, so whenever you see that make sure to add it to whatever is applicable, like in this case, $2,640.
4 0
3 years ago
Given the system of equations, what is the solution?
Mariulka [41]

Answer:

(5,3)

Step-by-step explanation:

hope this pic helps

6 0
3 years ago
Other questions:
  • Can someone please tell me the answer of 2.394 • 7.489
    15·1 answer
  • Why is it useful to write 6.51 as 6.510?
    15·2 answers
  • What's the answer?to this show me the steps too because this is hard
    12·1 answer
  • Please help me convert this to an equation with an explanation. Linda is shopping for a new cell phone and rate plan. She wants
    8·1 answer
  • Which statement about quadrilaterals is true?
    15·2 answers
  • What attributes of a rectangles and rhombuses are also attributes of parallelogram
    9·1 answer
  • Are 5/8 and 4/7 proportional
    15·2 answers
  • What is the value of x when y has a value of -9 ? -3x = y + 51
    9·1 answer
  • 4.2x = 13.23 (i need help please!!! it'd mean a lot!!!) its solving equations btwwww
    11·2 answers
  • Help a b c d or e what one
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!