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Ganezh [65]
3 years ago
15

How can you understand porportions

Mathematics
1 answer:
BlackZzzverrR [31]3 years ago
4 0

A proportion is a statement that two ratios are equal.  A ratio is a comparison of two different quantities.  "Miles per hour" is a ratio.  "Dollars per pound" is a ratio.  A proportion is that two of these things are equal.

For example, paying $2/pound for apples is the same as paying $6 for 3 pounds:

   \dfrac{\$2}{1 \text{ pound}} = \dfrac{\$6}{3 \text{ pounds}}

That's a portion.

When working with proportions in word problems, you start by setting up one ratio/fraction where you know all the information.  You then set up the second one that's missing a piece of information, but you make sure to set it up using the same structure.

If your first ratio is "miles over hours," then the next ratio has to have the same organization.

If your first ratio is "rise over run," then the next ratio has to have the same organization.

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3 years ago
The coordinates of the vertices of △ABC are A(−4, 6) , B(−2, 2) , and C(−6, 2) .
vfiekz [6]

Answer:

translation 2 units left ; reflection across the y-axis

Step-by-step explanation:

The y-coordinates of the points do not change from the pre-image to the image.  This means there is no translation down (this would add or subtract to the y-coordinates) and no reflection across the x-axis (this would negate the y-coordinates).

This leaves us with a translation 2 units left and a reflection across the y-axis.

The translation 2 units left adds 2 to the x-coordinates, and the reflection across the y-axis negates the x-coordinates.  If we add 2 first, the coordinates would be (-4+2, 6) = (-2, 6); (-2+2, 2) = (0, 2); and (-6+2, 2) = (-4, 2).

Negating each of these would give us (2, 6); (0, 2); and (4, 2).  These are the desired image coordinates.

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2 years ago
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ASAP! GIVING BRAINLIEST! Please read the question THEN answer correctly! No guessing.
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Answer:

A. G(x) = 7x^2

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If you were to vertically stretch the quadratic parent function, the correct answer would be "A," because you are stretching upwards, which in turn, also changes the y-values.

As you can see in the table, the x-value of 3 repeats, which cannot occur. Each input (x-value) can go to only one output (y-value). As a result, the table does not represent a function.

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