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earnstyle [38]
3 years ago
12

What does it mean by “what is the unit rate?” what is a unit rate?

Mathematics
2 answers:
Nikitich [7]3 years ago
3 0

Answer:

A unit rate describes how many units of the first type of quantity corresponds to one unit of the second type of quantity.

Step-by-step explanation:

yuradex [85]3 years ago
3 0

Answer:

Step-by-step explanation:

Common examples of "unit rate" follow:

miles per hour (mph).  How many miles are covered in 1 hour of driving?

25 cents/pen:  each pen costs 25 cents each.

Suppose I know I can pack 1/4 box in 20 minutes.  How many boxes can I pack in 1 hour?  That would be a unit rate.  To find it, write out the ratio

1/4 box                                                                                 60 min

-------------   and multiply this by the conversion factor    ---------------

 20 min                                                                                  1 hour

... which results in  3/4 box per hour (a unit rate)

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Quadrilateral ABCD is dilated by a scale factor of 1 over 2 centered around (2, 2). Which statement is true about the dilation?
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Answer:

Option (1)

1) Segment B'D' will run through (2, 2) and will be shorter than segment BD.

Step-by-step explanation:

The rest of the question is the attached figure (1).

The statement options are:

1) Segment B'D' will run through (2, 2) and will be shorter than segment BD.

2) Segment B'D' will run through (2, 2) and will be longer than segment BD.

3) Segment B'D' will parallel to segment BD and will be shorter than segment BD.

4) Segment B'D' will be parallel to segment BD and will be longer than segment BD.

==============================================================

See the attched figure (2), which represents Quadrilateral ABCD and the image A'B'C'D'

As shown:

The quadrilateral ABCD with vertices A(1,2), B(2,3), C(4,2) and D(2,1).

Quadrilateral ABCD is dilated by a scale factor of 1 over 2 centered around (2, 2).

So,

The quadrilateral A'B'C'D' will be with vertices:

A'= (1.5,2), B'= (2,2.5), C'= (3,2), D'= (2,1.5)

Comparing the options with the figure (2):

So, the answer is option (1)

1) Segment B'D' will run through (2, 2) and will be shorter than segment BD.

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