what is it and how do you do it?What is the additive inverse of 14?What is the additive inverse of -21?
The additive inverse of a number is the opposite of the number. Therefore, you simply change the sign from addition to subtraction or vice versa. Therefor: +14's additive inverse is -14 -21's additive inverse is +21 I really hope that this helps you. :) :D :)
I agree that it looks like quartz If you have a peice of glass or an old compact mirror scratch the crystal on it. If it leaves a mark its most likely quartz. Also those smally crystal heads look like quartz
it does look like milky quartz, with maybe some magnetite (black); but it looks too glassy. by all means, do some tests on it, as suggested by other answers. and let us know the results, okay? i think it will probably turn out to be some form of calcite, with chemical weathering on the surface.
Definition: y is the additive inverse of x if x + y 0. The additive inverse of 14 is -14, since 14 + (-14) 0. The additive inverse of -21 is 21, since (-21) + 21 0.
An additive inverse is the number when added will equal zero, thus the additive inverse of 14, is -14. (14-140) And the additive inverse of -21, is positive 21. (-21+210) Best Wishes
