What is a mathematician and cryptologist

As soon as look at the parallelogram abcd shown below: the table below shows the steps to prove that if the quadrilateral abcd is a parallelogram, then its opposite sides are congruent: which choice completes the missing information for reason 5 in the chart? (6 points) congruent parallelograms congruent triangles similar angles similar triangles

What is the sum of these mixed numbers 2 1/8 + 4 3/8

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2