Answer:
Scientific notation simply refers to the process of expressing long numbers in decimal.
I think it would have to be a problem with a negative number plus and positive number...
2.92. you divide 8.75 by 3 it will be 2.916666666. you have to round.
First you create a proportion (30/100=x/120). After you solve this, next you subtract this answer from 120. Then create a proportion for 40% (40/100=x/120). Then add this number to the first answer you got when you subtracted the answer from your first proportion from 120.
Let's name the number 'n'. Now write an equation. 7*n +n^2 =12Now you can form a quadratic. n^2 +7n-12=0. Now you can use a myriad of methods to solve it. If you still need help, just message me.
