The radius of circle A is 12units. the radius of circle B is 2 times the radius of circle A what is the circumference of circle B? leave your awnser in terms of pi​

Add the two expressions 3.8b - 7 and 2.9b + 9 enter your answer in simplified form

What are “like terms”? why can we only add like terms?

Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers