Answer:
110
Step-by-step explanation:
123 + -13 = 110
I tried.
hope that helps
1,000,000 is written as 10^6. Other wise it would be too low or too high.
Answer:
a=10 and b= -12
Step-by-step explanation:
R = speed in still water
r + c = speed with current
r - c = speed against current
3.5(r + c) = 70
r + c = 20
c = 20 - r
4(r + c) = distance from pier to pier
5(r - c) = distance from pier to pier
4(r + c) = 5(r - c)
4(r + 20 - r) = 5(r - 20 + r)
80 = 10r - 100
180 = 10r
18 = r
The speed in still water is 18 km/hour
