Which of the following is a monomial? A. 9/x
B. 11x^2
C. 20x - 14
D. 20x^9 – 7x

ITS B: 11x^9

The diagram shows a 7cm by 6cm rectangle based pyramid. all the diagonal sides - ta, tb, tc and td are length 10cm. m is midpoint of rectangular base. work out height mt to 1 decimal place

The rumpart family is building a new room onto their house. the width of the new room will be 16 feet. the length of the room will be 4% greater than the width. write an expression to find the length of the new room. what will be the area of this new room?

What is the value of n in the equation -1/2(2n+4)+6=-9+4(2n+1)