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
-x -2 I think . 3-(-5)= -2 and 2x -3x = -x
Neptune is about four times wider than Earth.
Answer:
sin -115 = -0.91, cos -115 = -0.42
Step-by-step explanation:
