Answer:
should be 1213
Step-by-step explanation:
27×27=728
22×22=485
729+485= 1213
Answer:
11
Step-by-step explanation:
bobby: 2 hours
Zane Zachary: 3 hours
Slow Sammy: 6 hours
2 + 3 + 6 = 11 :)
Answer:
157???
Step-by-step explanation:
I don't really know how to do this
Answer:
p=2
Step-by-step explanation:
-7p = -3p - 8
Add 3p to each side
-7p+3p = -3p+3p - 8
-4p = -8
Divide each side by -4
-4p/-4 = -8/-4
p = 2
Time = distance/speed
total time = time for part 1 + time for part 2 + time for part 3
.. t = 5/r +6/(0.6r) +1/(r+1)
.. = (1/r)*(5 +6/0.6) +1/(r +1)
.. = 15/r +1/(r +1)
Add these fractions in the usual way.
.. = (15(r +1) +r)/(r(r +1))
.. t = (16r +15)/(r(r +1)) . . . . . . . . . your expression for t
For r=3, this is
.. t = (16*3 +15)/(3*(3 +1))
.. = 63/12
.. = 5 3/12
.. = 5 15/60
The trip takes 5 hours and 15 minutes