*I think you meant scientific notation.*
23 in scientific notation would be 2.3 x 10^1.
Answer:
-6 +2 = -4
Step-by-step explanation:
Its simple. Whenever you see two negative signs next to each other, they merge into an addition sign "positive".
-6+2 = -4
0.47 is the answer. Because it's in the middle of 0.43 and 0.50. I answered this on your last question =p