V = l x w x h. Area of the base if also lengh x width, so V = ( area of the base) x h 18 = 4.5 x h.So height : h = 18 / 4.5
In order to simplify this expression, we need to multiply the numeric values together and the variables together.
So we have:

Therefore the correct option is the third one.
Answer:
Two hydrogen atoms
Step-by-step explanation:
Answer:
5.5
Step-by-step explanation:
1 = 0.5
2 = 1
x1/2