Final answer:
A negative number that is expressed in scientific notation will always have a negative exponent.
Step-by-step explanation:
A negative number that is expressed in scientific notation will always have a negative exponent - this statement is true.
In scientific notation, numbers are expressed as a coefficient (between 1 and 10) multiplied by 10 raised to a power. When a negative number is written in scientific notation, the exponent will be negative because the number is less than 1. For example, -0.75 in scientific notation is written as -7.5 x 10-1 where the exponent is -1.
So, when a negative number is expressed in scientific notation, the exponent will always be negative.