The answer is: [B]: " 9 * 10⁻³ " .
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Answer:
z = 80°
Step-by-step explanation:
ABCD ~ FECG
∠F ≅ ∠A = z
∠F = 360-100-60-120=80
z = 80°

In the number line attached in my attachment,
The red line represents point :
The blue line represents point :
I hope it helps ~
You just break it up, do 20x8 then another 20x8 then 5x8