I think that inches would be most common for height but centimeters and feet could also be used.
fomular you say :speed =distance taveled divide by time traveled .......hope this will help
Answer: 1st one
Step-by-step explanation:
Expand the expression?
Perform indicated multiplication:
7a(2a)+7a(-5)-4(2a)-4(-5)
14a^2-35a-8a+20 combine like terms, ie (-35a-8a)=-43a
14a^2-43a+20
