Igot 9 but it was wrong ill give you 79 points for the correct answer

XY and YZ are the same length, so we can set their expressions to equal each other:

(x+5) = (3x - 3)

Add 3 to both sides:

x + 8 = 3x

Subtract x from both sides:

2x = 8

Divide both sides by 2 to get x by itself:

x = 4

XZ is equal to the lengths of lines XY and YZ. Plug the x value into their expressions:

(4 + 5) + (3(4) - 3)

9 + (12 - 3)

9 + 9 = 18

The measure of line XZ will be 18.

(4 + 5) + [3(4) - 3] = [9 + (12 - 3)] = (9 + 9) = 18

18 is the answer

question:

could we have options?

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b