Apicture frame has a perimeter of 40 inches. its length is 2 inches greater than one-half its width. let w represent the width of the picture frame, and let l represent the length. which system of equations can be used to find the dimensions of the picture frame?

Which is a graph of a proportional relationship?

Ascientist wants to use a model to present the results of his detailed scientific investigation. why would a model be useful? a )because the model makes the concepts easier to understand b) because the model is easy to put together and to use c) because the model prevents other scientists from asking questions d) because the model requires the audience to pay full attention to it i don't know what to choose because between a and d a is much more likely than d because it only wants to get the attention of the audience. i'm confuse.

If chord ab is congruent to chord cd, then what must be true about ef and eg?