Order the numbers from least to greatest 7.8 7.88 7.78 7.87 7.77

Given a(-12,5) and b(12,29) find the point that divides the line segment ab three-eighths of the way from a to b

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

In δabc, m∠acb = 90°, cd ⊥ ab and m∠acd = 45°. find: a find cd, if bc = 3 in