You move the decimal to the left three places, so it is 10³
2.5 * 10³
Hope this helped :)
Answer: 15
Step-by-step explanation: Good luck! :D
Answer:
The number is 220
Step-by-step explanation:
Let n represent the number
10(2) + n = 240
20 + n = 240
240 - 20 = 220
n = 220
General equation of a circle with centre (h, k) is given by:

Now, the origin is the centre and radius is 20, so substituting these points in yields:
