Finding LM ab=75 and dc=182

Find a number such that if you add 8 and divide the result by 4 you will get the same answer as if you subtracted 3 from the original number and divided by 2

Drag the tiles to the boxes to form correct pairs. not all tiles will be used. match each set of vertices with the type of quadrilateral they form

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?