Answer:
S = v1 t1 = 7 t1 traveling downstream
S = v2 t2 = 5 t2 traveling upstream
7 t1 = 5 t2
7 (6 - t2) = 5 t2 since t1 + t2 = 6
42 - 7 t2 = 5 t2
t2 = 42 / 12 = 3.5 hrs so t1 = 2.5 hrs
S = 7 t1 = 7 * 2.5 = 17.5 mi
Also, S = 5 t2 = 5 * 3.5 = 17.5 mi
36.89 total divided by the 8.6 gallons he bought = 4.2 so the price per gallon would be $4.20
I believe the perimeter is 7.71
Answer:
the answer is b
Step-by-step explanation:
Answer:
гафу итегез, мин ярдәм итә алмыйм, миңа бик кирәк
Step-by-step explanation:
гафу итегез, мин ярдәм итә алмыйм
