I need to know what 4x - 3 < 17

To prove that angle def = angle dgf by sas, what additional information is needed? def congruent to dgf dfe congruent to dfg de congruent to dg dg congruent to gf

Barbara is tiling her craftroom floor with square tiles.she wants 6/10 of the square tiles to be red.if she used 18 red tiles,how many square tileswill be used to cover the floor?

Explain how you should use the formula to calculate the number of pennies on rows 1-4. why use the formula?