NEED HELP ASAP!! Angles of Elevation and Despression! Need to find x! Round to the nearest tenth!

On a piece of paper, graph y< x+1. then determine which answer matches the graph you drew.

What is the missing step in this proof ?

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]