Let S = his average speed.
Let D = distance traveled one way
Time = distance / speed
Set up an equation:
d/6 + d/12 = 2d/S
Multiply the equation by 12s:
12s(d/6) + 12s(d/12) = 12s(2d/s)
Simplify to get:
2sd + sd = 24d
Combine like terms:
3sd = 24d
Divide both sides by d:
3s = 24
Divide both sides by 3:
s = 24/3
s = 8
His average speed was 8 mph.
Answer:
15
Step-by-step explanation:
Answer:
0.94 kg
Step-by-step explanation:
1kg = 1000 g
940 g = 0.94 kg
These are from least to greatest 1.6,1.64,16,4,16.009
Answer:
6
Step-by-step explanation:
5+5=10, so 4+6=10