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White raven [17]
3 years ago
11

What is true about every rotation?

Mathematics
2 answers:
Korvikt [17]3 years ago
8 0

Answer: A) The corresponding lengths, from the point of rotation, between the pre-image and image are preserved.

Step-by-step explanation:

A rotation is a rigid transformation that maps a figure by rotating it about some degrees from a particular point of rotation.

Since all the rigid motions produces congruent images. Therefore rotation too creates congruent images ( shape and size remains same) .

And corresponding sides of congruent images are also congruent.

Therefore, The corresponding lengths, from the point of rotation, between the pre-image and image are preserved.

Hence, the correct answer is option (A).

defon3 years ago
4 0
I believe the answer is A.
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There are three consecutive numbers such that twice the first is 20 more than the second.find the numbers? Show your solution.
xxTIMURxx [149]
Answering from phone so this will be a bit messy. a b=a+1 c=b+1=a+2 2a=b+20 Therefore: 2a=a+1+20 a=21,b=22,c=23
8 0
2 years ago
Solve the following quadratic equation by rearranging and then factorising x^2 + 7x + 19 = 9
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Answer:

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Step-by-step explanation:

The following are the temperatures in °C for the first 14 days of January:

-6, -2.5, 2, 2.5, -0.5, 5, 10, -3, -7, 3, -1, 7, 1, 4.5

5 0
2 years ago
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In Mrs.coopers class 12 of the 21 students completed their essay. What percentage completed their essay?
Fofino [41]

Answer:

57.14

Step-by-step explanation:

12/21 = ?/100

12 time 100=1200

1200 divided by 21 = 57.14

7 0
3 years ago
In ΔABC, if AB = 14 and BC = 9, AC may be equal to
Pie

Answer:

AC could be any number of these numbers 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22

Step-by-step explanation:

There is a fact in any triangle:

<em>The length of any side of a triangle must be greater than the difference of the lengths of the other two sides and smaller than the sum of the lengths of the other two sides</em>

If the lengths of the three sides of a triangle are a , b and c, then

  • a - b < c < a + b
  • b - c < a < b + c
  • a - c < b < a + c

In Δ ABC:

→ (BC) - (AC) < AB < (BC) + (AC)

→ (AB) - (AC) < BC < (AB) + (AC)

→ (AB) - (BC) < AC < (AB) + (BC)

∵ AB = 14 units

∵ BC = 9 units

- Find the sum and difference of them

∵ AB - BC = 14 - 9

∴ AB - BC = 5

∵ AB + BC = 14 + 9

∴ AB + BC = 23

- That means the length of AC could be any integer greater

    than 5 and smaller than 23

∴ 5 < AC < 23

AC could be any number of these numbers 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22

5 0
3 years ago
Read 2 more answers
Help pleas im doing this for a freind bc i need the money to buy food
Cerrena [4.2K]

Step-by-step explanation:

these are 2 similar triangles.

that means they have the same angles. and all sides have the same scaling factor between the 2 triangles.

so,

10/28 = 5/h

5 0
2 years ago
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