Which statement describes the picture sequence? a. The interior angle sum of a triangle is 180°

b. Vertical angles are congruent

c. The measure of an exterior angle is equal to the sum of its two non-adjacent interior angles

d. if parallel lines are cut by a transversal then corresponding angles are congruent

Which of the following constants can be added to x2 - 3x to form a perfect square trinomial?

Factor the polynomial expression x6 – x3 – 20

Efficient homemakers ltd. makes canvas wallets and leather wallets as part of a money-making project. for the canvas wallets, they need two yards of canvas and two yards of leather. for the leather wallets, they need four yards of leather and three yards of canvas. their production unit has purchased 44 yards of leather and 40 yards of canvas. let x be the number of leather wallets and y be the number of canvas wallets. draw the graph showing the feasible region to represent the number of the leather and canvas wallets that can be produced.