Earth travels about 1,050 kilometers every 35 seconds during its orbit around the Sun. Which proportion could you use to determine how long it takes Earth to travel about 1,770
kilometers as it orbits the Sun? (Write your own and then find the one that matches!)
F x
35
1.050
1770
G 1770
X
1050
35
1050
11
H 35
Х
1.050
1,770
Loso
1770
35
1050

Which best explains why this triangle is or is not a right triangle?

Julius sold five times as many computers as sam sold last year. in total, they sold 78 computers. how many computers did julius sell?

Set $r$ is a set of rectangles such that (1) only the grid points shown here are used as vertices, (2) all sides are vertical or horizontal and (3) no two rectangles in the set are congruent. if $r$ contains the maximum possible number of rectangles given these conditions, what fraction of the rectangles in set $r$ are squares? express your answer as a common fraction.