A rectangle with a length of 20 centimeters and an unknown width of x centimeters has a smaller rectangle cut out of it. The smaller rectangle has a length of 16 cm and a width of 3x. The area of the shaded region (what remains) is 80 square centimeters. Set up and solve an equation for the value of x.

s

step-by-step explanation:

is there any photos or whatever?

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,

d 25 pi/6

step-by-step explanation:

the diameter is 10 inches

the radius is 1/2 of the diameter or 5 inches

the area of the circle is

a = pi r^2

  = pi 5^2

  = 25 pi

the slice is 60 degrees of the entire circle.

60 degrees out of 360   60/360 = 1/6

the area of the slice is 1/6 of the circle

a slice = 1/6 a circle

a slice = 1/6 * 25 pi