Which of the following tools can be used to prove a statement using coordinate methods? -the distance formula -the equation of a line -theorems about parallel lines -the midpoint formula -theorems about perpendicular lines

At dinner, 2/5 of the people had fish and 1/3 had chicken. if everyone else had lamb, what fraction of the people had lamb? and if 40 people had lamb , calculate the total number of people at the dinner.

Which of the following is the result of expanding the series

The architect's side view drawing of a saltbox-style house shows a post that supports the roof ridge. the support post is 8 ft tall. the distance from the front of the house to the support post is less than the distance from the post to the back of the house. how far from the front of the house is the support post positioned?