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ryzh [129]
2 years ago
9

Answer: Need help with this plz

Mathematics
1 answer:
julsineya [31]2 years ago
8 0

Answer:

(a) 3x+28+5x+52+2x-10=180 (∠ sum of Δ)

                          10x+70=180

                                 10x=110

                                     x=11

(b) ∠C = 2x-10

           = 2(11)-10

           =  12°

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