Need help please! Solve the system of equation below using the substitution method. You must show all your work to
demonstrate you can use this method. If there are no solutions, write "No Solutions." If there are an infinite
number of solutions, write "Infinite Solutions."
y = -10x – 10
y = -6x - 2

Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?

The interior angles formed by the side of a hexagon have measures of them up to 720° what is the measure of angle a

Andy wants to find the distance d across a river. he located points as shown in the figure, then use similar triangles to find that d = 223.5 feet. how can you tell without calculating that he must be wrong? tell what you think he did wrong and correct his error. round your answer to the nearest tenth if necessary. andy must have used the wrong . the distance d is actually feet.