on an airplane there are two seats on the left side in each row and three seats on the right side There are 90 seats on the right side of the plane How many seats are on the left side of the plane

60 seats

Step-by-step explanation:

90 ÷ 3 = 30

30 × 2 = 60

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)