How you would subtract is you subtract 6 and for and them you have 3/9 left over so the answer is 2 3/9
He would have sanded 30 for 30 hours
These triangles are congruent by AAS condition hence the statement is true
Answer:
B
Step-by-step explanation:
-t²+4t+5=0
t²-4t-5=0
t²-5t+t-5=0
t(t-5)+1(t-5)=0
(t-5)(t+1)=0
t=5,-1
when t=0,d=5
actual time it it is in air=5-1=4 seconds.
