Ruben took the train due south from the airport, heading to the end of the line. At the same time, Sadie also left home and started driving due north to the end of the line, where she
would pick Ruben up. Ruben's train traveled 70 kilometers per hour, and Sadie drove 73
kilometers pel hour. They started out 69 kilometers apart and arrived at the station at the
same time. How long did it take them to meet?
If necessary, round your answer to the nearest minute.
hours and
minutes

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)

4x and 6y

im not sure though

there are 25 people coming to the party

step-by-step explanation:

the text says that there will be 22 children at this party, 1 teacher, and 2 parents. so if you add them all together (22+1+2) it will equal 25. (=25)