Answer:
86.72
Step-by-step explanation:
Girl here you go lol 6:22 & 9:33
Answer:
1/1296
Step-by-step explanation:
Answer:
3.6 hours
Step-by-step explanation:
To determine the time needed if they are working together, we use the formula
1/Ta + 1/Tb = 1 Tc
where Ta is the the time for the first item working alone
Tb is the time for the second item alone
Tc is the time for them working together
1/9 + 1/6 = 1/Tc
I multiply by 54Tc to clear the fractions
54Tc (1/9 + 1/6) = 1/Tc *54Tc
6Tc + 9 Tc = 54
Combine like terms
15Tc = 54
Divide each side by 15
15 Tc /15 = 54/15
Tc =3.6 hours
Answer: 172.5% OR 1.725 as decimal
Step-by-step explanation:
138-80=58
80=100% OR 1
58=x%
x=58/80
x=72.5% OR 0.725
58=72.5
1+0.725=1.725
80x1.725=138
Hopefully I somehow helped :) -KJ