Lena is making a banner for her little sister's birthday party. She tapes together pieces of construction paper until the banner is 3 feet long. Each piece of paper is 9 inches long. How many pieces of paper does Lena need?

In the following diagram it is given that dec,ab || dc, ad || eb, and ad is congruent to bc. a)why isn't abc a parallelogram even though it has a pair of parallel sides and a pair of congruent sides b)explain why be must be congruent to bc. further explain what type of triangle this makes triangle abc and what it tells you about angle 1 and angle 2c) finally why must angle 3 be congruent to angle 1? further, explain why we know that angle 3 is congruent to angle 2

Ten times the square of a non-zero number is eqaul to ninety times the number

What is the value of f(x) = 2.2 for f(-2)?