Decimal. Decimal is the base-10 notational system for representing real numbers. The expression of a number using the decimal system is called its decimal expansion, examples of which include 1, 13, 2028, 12.1, and 3.14159.
I'm not sure what you mean..... -0.4 is already a decimal.
Sorry for not being able to help
Answer:
5^6 × 5^(-2) × 5^(-7)
= 5^{6+(-2)+(-7)}
= 5^{6-2-7}
= 5^(-3)
Option c 5^-3
Option A: drop of 8 meters would be correct because a drop in this case indicates something has been removed. -8 equals 8 below 0.
