PLEASE NO LINKS, Find the measurement in parallelogram.
Need help, please.
I also need explanation.

21.) x = 0

23.) x = 0

Step-by-step explanation:

21.)

We know that Sides AD and BC are parallel to each other, so they are congruent as well, thus we can say:

x + 12 = 12

=> Now just subtract 12 on each side of "="

x = 0

23.)

We know that sides SV and TU are parallel which makes them congruent, hence;

12 + 2x = x + 12

=> First subtract x from each side,

12 + x = 12

=> Lastly subtract 12 on each side:

x = 0

Hope this helps!

part 1 answer = 8

part 2 answer = 72

step-by-step explanation:

part 1 explanation = add all of the numbers, then divide by how many numbers you have. so, 200/25 = 8.

part 2 explanation = not gonna lie, this is hard to explain, so just google how to do it.

(0,-3) see attached graph

step-by-step explanation:

a. to solve the system, graph the two equations.

x = y+3 becomes y=x-3 has m=1/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move up 1 unit and 1 unit to the right. plot a point and connect.

y=-4x+3 has m =-4/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move down four units and to the right 1 unit. plot a point and connect.

the solution is the point (x,y) where the two lines intersect. by the graph below it is (0,-3).

b. to solve by substitution, substitute y = -4x-3 into x= y+3

x= (-4x-3) +3

x=-4x

5x=0

x=0

now substitute x = 0 back in to find y.

y= -4(0)-3

y=0-3

y=-3

solution is (0,-3)

c. use elimination by adding the equations together.

x-y=3

4x+y=-3

5x=0

x=0

then substitute into one equation to find y.

y=-4(0)-3

y=-3