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Fofino [41]
3 years ago
7

What ratio is proportional to 18/21

Mathematics
1 answer:
Doss [256]3 years ago
3 0

Answer:

There are many.

Step-by-step explanation:

When you say proportional, you are looking for a ratio that is equivalent to the ratio given. In your case, there are many so you might need to be more specific. But still, we can help you figure it out.

An easy way to do this would be to scale it down to its simplest form and then move upwards. To find proportional ratios, just multiply denominator and the denominator with the same factor.

\dfrac{18}{21} = \dfrac{6}{7}

That is your ratio in its simplest form. Now we can scale up, I'll show you how to do one completely:

\dfrac{6}{7} x \dfrac{2}{2} = \dfrac{12}{14}

That's the same ratio scaled up by a factor of 2.

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

\dfrac{6}{7} x \dfrac{3}{3} = \dfrac{18}{21}

That's the ratio given

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

\dfrac{6}{7} x \dfrac{4}{4} = \dfrac{24}{28}

Scaled up by a factor of 4

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

\dfrac{6}{7} x \dfrac{5}{5} = \dfrac{30}{35}

Scaled up by a factor of 5.

The list goes on and on.


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Substitution:<br><br><br>5x - y= -5<br><br>3x - 6y = 24​
bixtya [17]

do u have to use the exact same number for all the substitutions?

8 0
4 years ago
Is 3,9,27,81 an arithmetic sequence
suter [353]

Answer:

no, it's geometric sequence

Step-by-step explanation:

hmm

5 0
3 years ago
13. (07.05 MC) What is the solution to the equation 5x + 2(x - 4) = 5x + x - 10? (1 point) O​
TEA [102]

Answer:

x = -2

Step-by-step explanation:

5x + 2(x - 4) = 5x + x - 10

First, we need to to multiply out the parathesis in the equation:

5x + 2(x - 4) = 5x + x - 10

5x + 2x - 8 = 5x + x - 10

Next, we can combine "like terms" to simplify the equation further:

5x + 2x - 8 = 5x + x - 10

7x - 8 = 6x - 10

Now we can isolate the variable "x" to one side:

7x - 8 = 6x - 10

x - 8 = -10

x = -2

To check our work, we can replace x with -2 in our original equation:

5x + 2(x - 4) = 5x + x - 10

5(-2) + 2 (-2 - 4) = 5(-2) + -2 - 10

-10 + 2 (-6) = -10 -2 - 10

-22 = -22

I hope this helps!

-TheBusinessMan

7 0
3 years ago
WHAT IS THE OPPOSITE OF 10?
Tju [1.3M]
-10 because it is exactly 10 away from 0
8 0
3 years ago
Read 2 more answers
Two out of every 5 jelly beans in a bag are green.
Andre45 [30]

Answer:

68

Step-by-step explanation:

135 divided by 2 wich equals 67.5 but you round up because you cant have half of a jelly bean which would be 68

5 0
3 years ago
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