Astudent is trying to solve the set of two equations given below: equation a: x + z = 6 equation b: 3x + 2z = 1 which of the following is a possible step used in eliminating the z-term? multiply equation a by −2. multiply equation b by 2. multiply equation a by 3. multiply equation b by 3.

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.

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =

Are triangles the congruent? write the congruency statement.what is the congruency that proves they are congruent? what is the perimeter of ∆pqr?