Formula for the perimeter of a rectangle p=2a + 2b, for b

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

Arectangle has a width of 5 cm and a length of 10 cm. if the width is increased by 3, how does the perimeter change?

Will mark determine whether the conjecture is true or false. give a counterexample for any false conjecture. given: points r, s, and t conjecture: r, s, and t are coplanar. a) false; the points do not have to be in a straight line. b) true c) false; the points to not have to form right angles. d) false; one point may not be between the other two.