What properties were used to prove that the expressions 7x + 4 - x - 2 and 6x + 2 are equivalent

I THINK the answer is distributive, associative, and commutative

Step-by-step explanation:

The equation, 7x+4-x-2, is distributive proporty.

The equation, 7x-x+4-2 is commutative

The equation, ( 7-1 ) x+4-2 is distributive

Sorry if I’m wrong

Best of luck  

the figures below are made out of circles, semicircles, quarter … find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations). remember that we'll also have to cut whatever areas we get in half, since we're only dealing

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