Marcello drew a triangle ABC, Angle A was twice as large as Angle B, Angle C was 15 degrees less than ten times Angle B. How many degrees is each angle?

What set does not contain -3 the set of all real numbers the set of all integers the set of all whole numbers the set of all rational numbers

If chord ab is congruent to chord cd, then what must be true about ef and eg?

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