Cho tam giác ABC vuông cân tại A . Trên cạnh BC lấy điểm H sao cho BH=HG=GC . Qua H và G kẻ các đường thẳng vuông góc với BC chúng cắt AB và AC theo thứ tự E , F . Chứng minh rằng : 1) tam giác BEH và tam giác CFG là tam giác vuông cân
2)EH=HG=GF

Recall the definition of a polynomial expression. find two polynomial expressions whose quotient, when simplified,is. use that division problem to determine whether polynomials are closed under division. then describe how theother three operations-addition, subtraction, and multiplication-are different from division of polynomials.

Leo has b boxes of pencils. each box contains 6 pencils. he has a total of 42 pencils. the equation that represents this situation the value of b that makes the equation true the first one is b+6=42,6b=42,b=42+6,or 42b=6 the second one are 7,836 48

Pyramid shown has a square base that is 18 inches on each side has a surface area of 164 square inches what is the slant height