Which of the following systems is equivalent to the given system?
2/3x - y = 2
x + 1/2 y = -3

a. 2x - 3y = 6 and 2x + y = 6
b. 6x - 3y = 6 and 2x + y = 10
c. 2x - 3y = 6 and 2x + y = -6

Which statement about the relative areas of δabc and δxyz is true? the area of δabc > the area of δxyz the area of δabc < the area of δxyz the area of δabc = the area of δxyz more information is needed to compare.

Factor the following expression. 27y3 – 343 a. (3y + 7)(9y2 + 2ly + 49) b. (3y – 7)(9y2 + 2ly + 49) c. (3y – 7)(932 – 217 + 49) d. (3y + 7)(92 – 2ly + 49)

The length of the line segment joining the midpoints of sides ab and bc of the parallelogram abcd is 10. find the length of diagnol ac