Find the sum or difference. give your answer as a mixed number in simplest form. -2 - (-3/8)

give explanation if you can please

For each proportion find the unknown number x 1/5/8=×/15

In need of in the diagram, ∠abc is a right angle. ∠dbc = 30°27'40". find the measure of ∠abd.

Complete each statement from the information given and the triangle criterion you used. if the triangles cannot be shown to be congruent, leave the box for the second triangle blank and choose for reason “cannot be determined.” carbon - regular hexagon. ∆can ≅ ∆ by