Find the solution to the system of equations. x + 4y - 5z = -6
x + 4y - 4z = -1
x + 5y - 4z = 3
A. x = 3, y = 4, z = 5
B. x = 5, y = 3, Z = 6
C. x = 3, y = 13, z = -14
O D. x = 4, y = 5, z = 3

Phyllis and chen are saving money to go to a football game. each friend starts with some money and saves a specific amount each week. phyllis made a graph to show the total she has saved at the end of each week. chen wrote an equation to show the total, y, he has saved at the end of each week, x. y = 15x + 15 compare the amount that each friend has when both friends start saving. select the correct answer from the drop-down menu to complete the statement. phyllis starts with $ and chen starts with $

In trapezoid abcd, ac is a diagonal and ∠abc≅∠acd. find ac if the lengths of the bases bc and ad are 12m and 27m respectively.

Anna is constructing a line segment that is congruent to another segment ab. for the construction, which tool should be used to mesure segment ab