Tell whether 25:2 and 3:8 form a proportion

Yes or no

Create and solve a linear equation that represents the model, where squares and triangles are shown evenly balanced on a balance beam. assume the weight of a square is 1 unit and the weight of a triangle is unknown.

Plz hurry evaluate the expression a+b where a=8 and b=19

Find the distance between the point (-3,-4), and (see the picture below)