15. The formula is a^2+b^2=c^2. So you just plug in the 9 and 12 in the a and b. You get 225. You then take the square root of that and get 15.
Answer:
5^2 (that just means 5 to the second power you can write it as just a tiny 2 next to the 5) × X + 3. so in total it is 5^2 x X + 3.
Answer:
Every 30 years you'll have half left
After 30 years = 900 grams
after 60 years 450 grams
Step-by-step explanation:
