Answer:
500 grams is 20 percent of 2.5 kg
Step-by-step explanation:
500*100 = 50,000
50,000/2500=20
The rule about negative exponents is that you put the base under "1" in a fraction and the negative exponent becomes positive. For example,

becomes

. So in your case,
Answer:12w=10212w=102.
We move all terms to the left:
12w-(10212w)=0
We add all the numbers together, and all the variables
-10200w=0
w=0/-10200
w=0
Step-by-step explanation: