Pls , it's 20 points

oa bisects measure of (a) 23
(b) 75
(c) 78.5
(d) 157

C)78.5

Step-by-step explanation:

∠BOZ = X

∠WOB = 7X - 4

X + 7X -4 = 180     {STRAIGHT LINE }

8X = 180 + 4

8X = 184

X = 184/8

X = 23

∠WOB = 7X - 4 = 7*23 - 4 = 161 - 4 = 157

OA  bisects ∠WOB. So, ∠WOA =∠AOB

∠AOB = 1/2 of ∠WOB = 157/2 = 78.5

( ͡° ͜ʖ ͡°)

step-by-step explanation:

just copy and paste it.

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62.5 paisa

step-by-step explanation:

4000*70 = 280000

280000-(2000*90) = 100000

4000-2400 = 1600

100000/1600 = 62.5

( give brainliest)