] Circle the statements below that are true for all values of x, y, and z. For any statement that is not always true, give an example of values of x, y, and z for which the statement is not true. (a) x(yz) = (xy)z. (b) x ÷ (y ÷ z) = (x ÷ y) ÷ z. (c) x + (y + z) = (x + y) + z. (d) x − (y − z) = (x − y) − z.

x=12 units bd= 10 units

step-by-step explanation:

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer

step-by-step explanation:

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