Answer:
Step-by-step explanation:
Additive identity is 0.
step 3 used the additive identity property.
5.51181 in feet. Hope this helps
3×2=6+4=d the 3×2 is how much the cost is and 6+4 is 10 so she paid 10 dollars
-4.9t²+7.5t+1.8=2.1
-4.9t²+7.5t-0.3=0
t=-7.5±√(56.25-4*-4.9*-.3)/-2*4.9
t=-7.5±√(44.49/-9.8
t=(-7.5±6.67)/-9.8
t=-.83/-9.8 = .085 or t= -14.17/-9.8 = 1.446
