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Nostrana [21]
3 years ago
7

Solve the system of equations using addition x+y=9 x-y=3

Mathematics
2 answers:
Semmy [17]3 years ago
8 0
(6,3) Is the answer________________
harkovskaia [24]3 years ago
4 0
I think this is correct. Hope this helps :)

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How many matches are needed to form figure number 9 and 17? explain​
saveliy_v [14]

Answer:

Please find the complete question in the attached file.

Step-by-step explanation:

For point 1:

At this point we make up triangles for the first one makes up by 3 matches figure 2 make up by 5 matches figure 3 makes up by 7 matches.

For point 2:

 4 \ \ 5\ \   6\ \   7\ \   8  you can try to  

9 \ \  11\ \ 13 \ \ 15 \ \ 17 draw to find  values  

For point 3:

number of matches= 1+2 \times \ figure\  number\\\\

For point 4:

1+2 \times 9=19 \ \ (use \ law \ of\  (iii)) \\\\1+2 \times 17=35

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