The answer is 45 because if you divide 84 and 2 you get 42 and then add 3
Answer:
D. -2s
Step-by-step explanation:
s+s-4s
=1s+1s-4s
=(1+1-4)s
=-2s
Answer:
2.5
Step-by-step explanation:
Answer:
Luster describes the reflection of light off a mineral's surface. Mineralogists have special terms to describe luster. Minerals that are opaque and shiny, such as pyrite, have a metallic luster.
Step-by-step explanation: