A brick measures 30 cm × 10 cm × 71\2 How many bricks will be required for a wall 30 m long. 2 m high and 3\4 m thick?

The perimeter of a rhombus with a side of 6 is 24

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15

Alina fully simplifies this polynomial and then writes it in standard form. xy2 – 2x2y + 3y3 – 6x2y + 4xy2 if alina wrote the last term as 3y3, which must be the first term of her polynomial in standard form? xy2 5xy2 –8x2y –2x2y