3 years ago

Help me the comments go under ask for details and the answers go under the answers

1 answer:

3 0

The first one is true and so is the second one.

When you graph the function, every x value (or input) has only one y value (or output). If the line weren't straight then there could be multiple inputs and outputs which would mean it isn't a function

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2 years ago

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Step-by-step explanation:

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2 years ago

7. Which dimensions result in the minimum perimeter for a rectangle with area 42.0 cm2?

natali 33 [55]

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Answer:

7. d. l = 6.48 cm, w = 6.48 cm

8. d. square

Step-by-step explanation:

For a given area, the perimeter can always be shortened by reducing the length of the long side and increasing the length of the short side. When you get to the point where you can't do that, then you have the minimum perimeter. You will reach that point when the sides are the same length: the rectangle is a square.

7. In light of the above, the best dimensions are √42 ≈ 6.48 cm for length and width.

8. In light of the above, the shape is a square.

_____

The attached graph shows the length of one side (x) and the associated perimeter. The other side is 42/x, which will also be 6.48.

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2 years ago