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alisha [4.7K]
2 years ago
10

11

Mathematics
1 answer:
Gnesinka [82]2 years ago
4 0

Using a proportional relationship, it is found that the two equations that have the same constant of proportionality are givn by:

с 1 and 3

<h3>What is a proportional relationship?</h3>

A proportional relationship is a function in which the output variable is given by the input variable multiplied by a constant of proportionality, that is:

y = kx

In which k is the constant of proportionality.

In this problem, the functions and constants are given as follows:

  • 1. 4y = 3x -> k = 3/4.
  • 2. 8y = 5x -> k = 5/8.
  • 3. 8y = 6x -> k = 6/8 = 3/4.
  • 4. 5y = 8x -> k = 8.5.

Equations 1 and 3 have the same constants, hence option c is correct.

More can be learned about proportional relationships at brainly.com/question/10424180

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Find the distance between the points (5/2,3) and (3/2,8)
AURORKA [14]

Answer:

d = \sqrt{26} ≈ 5.1 ( to 1 dec. place )

Step-by-step explanation:

to calculate the distance d use the distance formula

d = √ (x₂ - x₁ )² + (y₂ - y₁ )²

with (x₁, y₁ ) = (\frac{5}{2}, 3) and (x₂, y₂ ) = (\frac{3}{2}, 8)

d =√ (\frac{3}{2} - \frac{5}{2})² - (8 - 3)²

  =\sqrt{1+25} = \sqrt{26} ≈ 5.1


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6 because that is where the paarabola crosses the y line

Step-by-step explanation:

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pashok25 [27]

Answer:

Step-by-step explanation:

The domain represents the x-values

The range represents the y-values

Domain             Range

  3                        7

                            8

                            -2

                             4

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Question 20:
allochka39001 [22]

Answer:

The answer is C

Step-by-step explanation:

7 0
3 years ago
Brad sold candy bars and cookies for a fundraiser at school. Candy bars sold for $3, and cookies sold for $5. He sold a total of
kari74 [83]

Answer: First option

12 candy bars were sold

Step-by-step explanation:

Call x the amount of candy sold and call z the amount of cookies sold. Then we know that

x + z = 20

We also know that candy bars sell for $ 3 and cookies sell for $ 5. The profit was $ 76

So:

3x + 5z = 76

To find the quantity of candy bars sold we must solve the system of equations:

x + z = 20\\\\3x + 5z = 76

Multiply the first equation by -5 and add it to the second equation

-5x -5z = -100

               +

3x + 5z = 76

--------------------------------

-2x = -24\\\\x = 12

8 0
3 years ago
Read 2 more answers
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