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Tolonggg djawabb yaa

Tolonggg djawabb yaa-example-1

1 Answer

3 votes

Answer:

5. ∠BOC = 101°

6. ∠AOD = 160°

Explanation:

5) 1) cari nilai x


150=(4x-7)+(2x-5)\\150=4x-7+2x-5\\150=6x-12\\6x=150+12\\6x=162\\x=(162)/(6)\\x=27

2) masukkan nilai x dalam (4x-7)


(4x-7)\\=4(27)-7\\=108-7\\=101

6) 1) cari nilai x


180=x+(7x+20)\\180=x+7x+20\\180=8x+20\\8x=180-20\\8x=160\\x=(160)/(8)\\x=20

2) tolak 180° dengan nilai x


180-20=160

ataupun masukkan nilai x dalam (7x+20)


(7x+20)\\=7(20)+20\\=140+20\\=160

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