Let the number of quarter be x and that of nickels be y
total number of coins will be:
x+y=85
thus
x=85-y.........i
total amount of money will be:
0.25x+0.05y=14.25....ii
substituting i in ii we get:
0.25(85-y)+0.05y=14.25
21.25-0.25y+0.05y=14.25
7=0.2y
y=7/0.02
y=35
thus
x=85-35=50
the number of quarters was 50 and that of nickels was 35
Range is the possible y values
Solution: -5 less than y less than 5
(Use less than and equal to symbols, I can write it on phone; sorry)
Answer: the return trip took approximately 4 hours.
Step-by-step explanation:
Erica and her friends rode a train to get to their vacation destination. The time that it took them to get to their vacation destination is 5 hours.
The return trip was only 5/6 of the time of the original trip. Therefore, the time that they spent on the return trip would be
5/6 × 5 = 25/6 = 4.16667
Rounding up to the nearest whole number, it becomes 4 hours
I don’t see the picture i don’t know how to do it
(3^2)^3=3^6
(3^2)^3=729
3^6=729