Find the perimeter of the triangle.
(21 – x) in.
(2x - 3) in.
(x + 5) in.

x=8, Perimeter is 8

Step-by-step explanation:

(21-x)=(2x-3), x=8

21-x=x+5,x=8

2x-3=x+5,x=8

Plug in 8 into all equations

water molecules will move from the side of higher water concentration to the side of lower concentration until both solutions are isotonic. at this point, equilibrium is reached. in an isotonic solution, the flow of water in and out of the cell is happening at the same rate.

hope this < 3

first anwser choice.

step-by-step explanation:

the greater/less or equal to symbol (> or < with the line at the bottom) is a closed/filled in circle.

-5c + 2 _< _27

subtract from both sides by 2

-5c _< _ 27

divide both sides by -5

c _< _ 5.4

flip the inequality sign

c _> _5.4

the only possible answer that would match the simplified inequality is the first answer choice