which of the following are possible ways to eliminate a variable by multiplying first for -x + 2y =9 and 9x - 7y = -4

The length of triangle base is 26. a line, which is parallel to the base divides the triangle into two equal area parts. find the length of the segment between triangle legs.

In right ∆abc shown below, the midpoint of hypotenuse ac is located at d and segment bd is drawn.if ab = 12 and bc = 16, then explain why bd = 10. hint: consider what you know about the diagonals of a rectangle.

Me complete this proof! prove that a quadrilateral is a square. me with the steps for this proof.