Carlon plans to evaporate a number of gallons of water from 90 gallons of a 15% salt solution to make a 25% salt solution. Which equation can he use to find x, the number of gallons that should be evaporated?
Original
(Gallons)
13.5
90
Removed
(Gallons)
0
New
(Gallons)
Amount of Salt
Amount of Solution
х
25
13.5
90-X100
o 13.5 - 200
13.5(90 - ) - 0.25
13.5(90- x) - 25

step-by-step explanation:

there is a formula i can give you:

it is r^2*n*sin(360/n) divided by 2 where r represents the "radius" and n is the number of sides.

plug them in:

(10sqrt(3))^2*6*sin(360/6) divided by 2

100*3*6*sin(60) divided by 2

900*sin(60)

900*sqrt(3)/2

450*sqrt(3)

approx is 779.4 cm^2

c

step-by-step explanation:

c

step-by-step explanation:

i think because what else can be a sample of every member