Annabelle mixes x gallons of 85% alcohol solution with 2 gallons of 25% alcohol solution to make a 60% hand sanitizer. How many gallons of 60% sanitizer does Annabelle have?

correct answer:

b.(19,-2)

ion

step-by-step explanation:

ion ion ion ion ion ion ion ion ion ion ion

step-by-step explanation: given equation a = h(b 1+b 2)

also we are given values of a, h and b 1 as :

a = 16, h = 4, and b 1 = 3.

in order to solve it for b 2, we need to plug the given values of   a, h and b 1 .

therefore, plugging values of   a, h and b 1   in given equation, we get

16 = 4( 3 + b 2)

first dividing both sides by 4, we get

4 = 3 + b 2

subtracting 3 from both sides, we get

4 -3 = 3 -3 + b 2

1 = b 2.

"exterior angles = 360 / number of sides.

60 = 360 / sides

sides = 360 / 60

sides = 6"