Here lays all my hopes and dreams.

hello :)

Step-by-step explanation:

i hope you achieve all your hopes and dreams ^-^

A number is written in scientific notation when a number between 1 and 10 is multiplied by a power of 10.

Scientific notation is helpful when dealing with really large numbers with a lot of zeroes because you can express them with smaller numbers, and it looks a lot more simple. It's just a different way to express numbers.

Here's an example : Let's say someone asked me to put the number

650,000,000 into scientific notation.

That would be 6.5 ✕ 10^8

Hope this helps, please mark brainliest if possible. Have a nice day.