Seven fire fighters go to cheap burger for lunch. if 2 people have hamburgers and 5 people have hot dogs, the bill will be $8.00. if 5 people have hamburgers and 2 people have hot dogs, the bill will be $9.50. what is the price of a hamburger?

At the newest animated movie, for every 9 children, there are 4 adults. there are a total of 39 children and adults at the movie.

Can some one explain how to slove specifically, what is the value of x? 0.9(x+1.4)-2.3+0.1x=1.6 enter the answer as a decimal in the box. x= ?

In the picture below, line pq is parallel to line rs, and the lines are cut by a transversal, line tu. the transversal is not perpendicular to the parallel lines. note: figure is not drawn to scale. which of the following are congruent angles?