If a number y has a positive integer factors then y and 2z integer factors. Is it true? how?

Given:

x is a factor of y --> , for some non-zero integer ;

y is a factor of z --> , for some non-zero integer ;

So, .

Question: is z even? Note that will be even if either or is even

(1) even --> either even, so the answer is directly YES or is even (or both). But if is even and as then z must be even too (one of the multiples of z is even, so z is even too). Sufficient.

(2) even --> as then as one of the multiples of z even --> z even. Sufficient.

D.

step-by-step explanation:

two pairs of adjacent sides are of equal length. this implies that one diagonal divides the kite into congruent triangles, and so the angles between the two pairs of equal sides are equal in measure. it also implies that the diagonals are perpendicular.

( - 4 , -7 )

all the lines must parallel  

step-by-step explanation:

coordinates of c = ( - 1 , 2 )

3 units left = ( -4 , 2 )

9 units down = ( - 4 , 11 )