A = 1/2 bh
A = 1/2 (21)(8)
A = 1/2 (168)
A = 84
The is The 103.8 Cause Of the math is correct
Answer:
Step-by-step explanation:
Δ = 
VΔ = 4 * 8 = 32
a = (- 4 ± 32) * 
a' = 7/2
a''= 9/2
Answer:
Lol I learned about this today in class, but I couldnt pay attention cuz I started crying about something
Step-by-step explanation: