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elena-s [515]
3 years ago
12

What is the missing reason in the proof?

Mathematics
1 answer:
laila [671]3 years ago
4 0

It might seem silly, but it's important to say that something is equal to itself. This applies to numbers like saying 2 = 2 and it also applies to geometric lengths as well. In line 5, we say that segment DB is the same length as segment DB. In short, DB is congruent to itself. This property is known as the reflexive property of congruence. You can think of a mirror giving off a reflection which has a similar word structure to reflexive.

You are correct if you were going to select choice B as the answer.

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Necesitoooooo ayudaaaaaaaaaaaa
SCORPION-xisa [38]

Answer:

x = 50, y = 140

Step-by-step explanation:

The angles x, 40 and 90 lie on a straight line and sum to 180° , that is

x + 40 + 90 = 180

x + 130 = 180 ( subtract 130 from both sides )

x = 50

The angle vertically opposite x is congruent to x , that is 50°

y = 90 + 50 = 140

5 0
2 years ago
Use your pointless mathematic skills to solve 9+10=21
alekssr [168]
The answer is 9+ 10=22
6 0
3 years ago
How much is 10% of 10 liters of milk?
OLEGan [10]

*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆

Answer:  1 liter of milk

Explanation:

10 x .1 = 1

I hope this helped!

<!> Brainliest is appreciated! <!>

- Zack Slocum

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5 0
2 years ago
15
IceJOKER [234]

4x+3x=7x

18 girls-5%

Total no: of girlsx5/100=18

Total-100x18/5-360 girls

4x+3607x

360-7x-4x

360-3x

x=360/3-120

4x=4x120=480

3x=3x120=360

Total no: of students=480+360-840

4 0
2 years ago
A lawn moving company is trying to grow its business. It had 18 clients
nekit [7.7K]
Is there more to the question?
8 0
3 years ago
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