the lenght of rectangle is 2 times its width and the perimeter of the rectangle is 60cm . then the lenght is​

Step-by-step explanation:

L = P/2 - w

Let's suppose the length to be x then width = 2x and perimeter = 60

60/2 - 2x

L = 30 - 2x

i will pick c put check it over to be sure

step-by-step explanation:

(2x + 16) + (x) = 180

step-by-step explanation:

given,

abcd is a quadrilateral inscribed in a circle

angle a is labeled x plus 16, (x + 16)

angle b is labeled x degrees, (x)

angle c is labeled 6x minus 4, (6x – 4)

angle d is labeled 2x plus 16, (2x + 16)

what equation can be used to solve for angle b?

we know that the sum of the opposite angles of a simple quadrilateral inscribed in a circle is 180 degrees.

angle b is opposite angle d

therefore, angle b + angle d = 180

(x) + (2x + 16) = 180 

same as (2x + 16) + (x) = 180