1. There are 47 students in a school bus. 23 students got off at a stop and 19 students got off at another stop. How many students are left in the bus?

5

Step-by-step explanation:

23+19=42

47-42=5

There are 5 students left in the school bus

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)

no not all of them.

step-by-step explanation:

some of them have a square base.