A rectangle has an area of 100cm and a perimeter of 104cm. Find the length and width of the rectangle (NEED ASAP)

1. are the triangles similar and if so why? what is the value of x? show your work.

If square root x = -7, then x= -49 true or false

Atriangle has an area of 72 square inches. if the base of the triangle has a length of 18 inches, what is the height of the triangle? use the formula for the area of a triangle: area = (base)(height) type a numerical answer in the space provided. do not include the units or spaces in your answer.