In the lab, raina has two solutions that contain alcohol and is mixing them with each other. she uses twice as much solution a as solution b. solution a is 16% alcohol and solution b is 19% alcohol. how many millimeters of solution b does she use, if the resulting mixture has 102 millimeters of pure alcohol?

i think it's ф or x=6,-6

step-by-step explanation:

-x^2=-36

x^2=-36

ф

or

if you mean by : -(x^2)=-36

it'll be: x^2=36

x=6,x=-6

hope it'll ! have a good day!

you for asking!

step-by-step explanation:

no, her answer is not correct.   we square the lengths of all sides and then determine whether the pythagorean theorem holds here:

9² + 15² = 306.   this is not equal to the square of the longest side ( that square being 395.   answer c is correct.