What is the area of the figure below?

Step-by-step

Two Small End squares

Square area = s^2

s = 3

s^2 = 9

But there are 2 of them so the total area = 2 * 9 = 18

Two Middle Triangles.

The height of each triangle = 7 - 3 = 4

The height of each triangle =  4/2 = 2

Each triangle has a height of 2

The length of each triangle = 5 + 5 = 10

Area of one triangle = 1/2 * 2 * 10 = 10

Area of both triangles = 20

Area of Left over rectangle.

Area = L*W

Area = 10 * 3

Area = 30

Total Area

30

20

18

68  is the total area.

Which I think is A. I really can't read the choices well

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so:

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,