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Annette [7]
3 years ago
12

Using Angle Relationships to Solve Equations

Mathematics
1 answer:
muminat3 years ago
6 0

Answer:

8.  x=19

9. 42

10. 23

Step-by-step explanation:

8.

x+x+4+3x-9 =90

5x-5=90

x= 19

9.

x=19

x+4= 23

19+23=42

10.

x+4=23

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