Answer:
5
Step-by-step explanation:
1.3km = 10 minutes
speed * time = distance
speed = distance divided by time
His speed = 1.3/10 = 0.13 km/h
Answer:
x=2
Step-by-step explanation:
=>30x = 30+30
=>30x = 60
=>x= 60/30
=>x=2
Simplify 2/3(b+c) to 2(b+c)/3
a=2(b+c)/3
Multiply both sides by 3
a * 3 = 2(b+c)
Regroup terms
3a=2(b+c)
Divide both sides by 2
3a/2 = b+c
Subtract c from both sides
3a/2 - c = b
Switch sides
b = 3a/2 - c