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Masteriza [31]
2 years ago
8

HELP ME PLEASE AND THANKS SO MUCH

Mathematics
2 answers:
Zinaida [17]2 years ago
4 0

Answer:

180-(65+57)=58

Step-by-step explanation:

loris [4]2 years ago
4 0

Answer:

Step-by-step explanation:

There's only 1 angle to find.

45 + 57 + ? = 180                    All triangles have interior angles that add to 180.

102 + ? = 180                          Combined 45 and 57  Subtract 102 from both sides

? = 180 - 102                           Combine

? = 78

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Is this correct? Look at pic attached
Georgia [21]

Answer:

Perfect!

Step-by-step explanation:

Complementary= 90 degrees

Supplementary= 180 degrees

Looks like you got both of those. Good job!

<1 + <2 = 90

<1 = 55

90-55=35

<2=35

<2+ <3= 180

180-35= 145

<3 = 145 degrees

You did awesome! Amazing job!

3 0
3 years ago
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Step-by-step explanation:

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Step-by-step explanation:

This is more easily understood if you take out a common factor of -1

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