bantuin nomer 19 sama 20 dong...
Matematika
nsjk
Pertanyaan
bantuin nomer 19 sama 20 dong...
1 Jawaban
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1. Jawaban FatimahZahrafaza
19. a) 1 = 3 , 4 =1
b) 1=2, 4=3
20. (2x + 5) + (3x + 10) = 180 derajat
=5x + 15 = 180
=5x = 165
= x = 33
sudut BOC = 2x + 5
= 33 x 2 + 5
= 71 derajat