Estimate the product of 3.9 and 4.6 using mental math. explain the method you used.

1. are the triangles similar and if so why? what is the value of x? show your work.

Find the area of the triangle shown 3 by 6

Mr. brettler is hanging up a 5-foot tall rectangular welcome sign in the gym. he has drawn a sketch on a coordinate grid. he has the lower vertices of the sign at (9, –3) and (–6, –3). where would the upper vertices be on the grid?