Answer:
40 km/h
Step-by-step explanation:
rate of change of distance = speed
speed = distance/time
speed = (400 km)/(10 h)
speed = 40 km/h
That's easy. Just look up the arc sine of .43 which equals:
25.468 Degrees
A model house that runs completely on renewable energy uses 2windmills and 3 solar panels. Each windmill generates M kilowatt-hours (kWh) of energy per year, ad each solar panel generates S kWh per year. Which expressions can we use to describe how many kWh of energy the model house will output in 10years?
Answer:
1/8;17/20;But I don't really understand take them out separately or at the same time, the secondary answer is 17/180
Step-by-step explanation:
P1=5/40=1/8,that means there is 5 different balls in forty balls you can take,the situation you take the ball is 40,but the situation you take the different one is five so the possibility you take the different on is 5/40=1/8.
the next answer is just like how we do during the first question