i think the person below me is correct and the answer is 12
Answer:
v₁ = 2.5; v₂ = 0.5.
Step-by-step explanation:
4v² + 8v + 5 = 10
4v² + 8v + 5 - 10 = 10 - 10
4v² + 8v - 5 = 0
D = 8² - 4 · 4 · (-5) = 64 + 80 = 144

Answer:
4 centimeters
Step-by-step explanation:
6+6=12
20-12=8
8/2=4