Round 54,548 to the nearest ten thousands

Use the diagonals to determine whether a parallelogram with vertices u(2,−2), v(9,−2), w(9,−6), and x(2,−6) is a rectangle, rhombus, or square. give all the names that apply.

The base of a triangle exceeds the height by 9 inches. if the area is 180 square inches, find the length of the base and the height of the triangle.

Write 5(6x+4)-2(5x-2) in the form a(bx+c) where a,b and c integers and a> 1