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11Alexandr11 [23.1K]
3 years ago
5

Do 2 ratios form a proportion???

Mathematics
2 answers:
Natalija [7]3 years ago
8 0

Answer:

yes

Step-by-step explanation:

because you can set them up as a fraction too. example;

2/3 is the same as 2:3, with which you can set equal to another thing and solve

frez [133]3 years ago
7 0

They form a proportion when both of the ratios are equivalent.

An example: 3/15 and 1/5 is a proportion because the are equivalent.

The reason why they are equivalent is because if you cross multiply meaning doing 3*5 which equals 15 and 15*1 which equals 15 so basically you multiply the numerator by the other fractions denominator and do the same for the other side and see if the numbers are the same if they are not the same they are not a proportion if they are the same they are a proportion.

Hope this helps!

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Garrett ran 3 1/4 miles on Monday. on Wednesday he ran 2 2/3 miles father than on Monday. on Friday he ran the same distance as
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3 1/4 + 2 2/3

3 1/4= 13/4
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3 years ago
Which of the following could be the equation for a parabola that opens down with the vertex (-11,-28)?
Mekhanik [1.2K]

Answer:y=-5(x+11)^2 -28

Step-by-step explanation: Okay think about what you know about translations and transformations of parent functions. In this case, the parent function is x2. So what now?

First, the problem states that the parabola opens DOWN. This means that you should look for a negative leading coefficient. This narrows your options down to C or D. (-5 is the leading coefficient)

Now starting with the x2, the vertex would be at (0,0), but in this problem it is at (-11,-28). That means it was TRANSLATED 11 spots in the negative x-direction and 28 spots in the negative y-direction.

Look at your options, when a number is being added directly unto the x variable, such as in answer C, it moves in the negative x-direction. This tells you that C has to be your answer.

I hope that helps!

8 0
3 years ago
Solve for X, 4x+5=17
Anettt [7]

Answer:

x=3

Step-by-step explanation:

4x=17-5

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7 0
3 years ago
Read 2 more answers
Simplify 2x 2 - y for x = 3 and y = -2.<br><br> I got 20. Is this correct?
mina [271]

Answer: No it is in correct the answer is actually -x3 + 2x + y

Step-by-step explanation:

3 0
3 years ago
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