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zhannawk [14.2K]
4 years ago
14

Which pairs of polygons are similar? Select each correct answer.

Mathematics
2 answers:
padilas [110]4 years ago
8 0
What was the answer please help me
kvasek [131]4 years ago
5 0

Answer: The first and fourth pair of polygons are similar.


Step-by-step explanation:

If two polygons are similar then their corresponding sides are proportional.

Let's check

  • In the first pair there are two rectangles and their dimensions are proportional as

\frac{22}{13.75}=\frac{16}{10}=1.6

  • In the second pair there are right triangles but their dimensions are not proportional as

\frac{18}{8}=2.25 and \frac{30}{17}=1.76

  • In the third pair there is one isosceles triangle and other is equilateral triangle, which can not be similar as they have different type of triangles.
  • In the fourth pair there are two right trapezoid and their dimensions are proportional as

\frac{7.5}{3}=\frac{30}{12}=\frac{12.5}{5}=\frac{20}{8}=2.5

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vivado [14]

Answer:

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1. A = 1/2bh
OleMash [197]
1 and 2 i can't answer without proper data.
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3 years ago
Trigonometry
Alla [95]

90° is equal to  \frac{\pi}{2} or 1.5707 radians.

Step-by-step explanation:

Step 1:

If an angle is represented in degrees, it will be of the form x°.  

If an angle is represented in radians, it will be of the form \frac{\pi}{x} radians.

To convert degrees to radians, we multiply the degree measure by \frac{\pi}{180}.

For the conversion of degrees to radians,

the degrees in radians = (given value in degrees)(\frac{\pi}{180}).

Step 2:

To convert 90°,

90 (\frac{\pi}{180} ) = \frac{\pi}{2}.

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3 0
4 years ago
142 is 120% of what number
forsale [732]
142=120% of x
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The unknown number should be 118.33, rounded to 118 or so.
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3 years ago
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