Answer:
R=30.81≈31
Step-by-step explanation:
Answer:
2
Step-by-step explanation:
Answer:
B is 6.
Step-by-step explanation:
We are trying to find a value for
such that:
is true for every
.
So let's choose
:




Divide both sides by -8:



Note: I didn't want to choose y to be 0 because the value of B would disappear from the equation. So you should be able to have chosen any x and y except for y=0 to solve the equation for B.
Check:
So let's check and use foil to multiply out the right hand side.




There was a 2 in front of that multplicapltiation:



This is exactly what we have on the left hand side of your given equation.
Speed = Distance/Time
So, speed
= 300 km/2h
= 150km/h
= (150 × 1000m) / 3600s
= 150000m/3600s
= 41.66m/s [approximately]
No, it would be 180.0 , since you are multiplying the small amount by a large amount that is not negative.