To express a number in one unit as an equivalent value of another unit

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1

Anyone? 15m is what percent of 60m; 3m; 30m; 1.5 km?

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