Every rational number is a whole number. true or false

False.

Step-by-step explanation:

A rational number is any number that can be expressed as a fraction. Whereas, a whole number is a positive number without a decimal or fractions. Every rational number may or may not be a whole number.

i used to know but i learned it a long time ago sorry

step-by-step explanation:

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)