Answer:
6.39*10^-4
Step-by-step explanation:
according to the form that is used to convert usual into scientific notation it be like 6.39*10^-4
Answer:
3
Step-by-step explanation:
4 because 6(4) = 24 and 24-3=21
Answer:
0.715
Step-by-step explanation:
So, let's solve all of them and see:
a - (-b) = a + b ⇒ can be either positive or negative, depending on the numbers
a + (-b) = a - b ⇒ can either be positive or negative, depending on the numbers
a * (-b) = a * (-b) ⇒ negative answer no matter what
a / (-b) = a / (-b) ⇒ negative answer no matter what
So the answer is:
<em>"None of the above"</em>.
Hope it helped,
BioTeacher101
(If you have any questions, feel free to ask them in the comments)
