Agold bar that is 16 cm x 2.5 cm x 5 cm has a density of 9.3 g/cm³ what is the mass of the gold bar

Me! 50 points! why does when we come home, our door is unlocked and there is grease on the door knob, me solve this , and i don't know what category this goes under

What is the difference between regular convex and concave polygons

Scrub a dub toothbrushes are $4.00 each. there is a 10% discount, but there is also a 6% sales tax after the discount is applied. what is the new price after tax? round to the nearest penny