I give Brainliest to whom says this question is stupid. What is -2x-8

How do you find the circumfrance of a circle?

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

How many liters of peroxide should be added to 12 liters of an 8% peroxide solution so that the resulting solution contains 16% peroxide?   original added new amount of peroxide 0.96 liters x 0.96 + x amount of solution 12 liters x 12 + x 0.18 liter 1.14 liters 1.92 liters 2.10 liters