Triangle j’k’l’ shown on the grid below is a dilation of triangle jkl using the origin as the center of dilation : which scale factor was used to create triangle j’k’l’

When using the linear combination metho e linear combination method to solve a system of linear equations, the four options are:

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

What three-dimensional solid have 6 rectangular faces, 2 equal bases that are not rectangles and 18 edges