Jim wrote a check for $8. Jim then wrote eight more checks for the same amount. Which integer represents the change in Jim's account

If 2(a^2+b^2)=(a+b)^2 then, > a+b=0, > ab=0, > a=b, > 2a=b

The two square pyramids are similar. find the total volume of both pyramids if the ratio of their surface areas is 9/16

The area of a rectangle is 10 cm^2. one side of the rectangle is x cm. express the perimeter of the rectangle in terms of x and show that this rectangle cannot have a perimeter of 12 cm. the perimeter of the rectangle in terms of x is __ cm