Somebody please help What is the value of x in the matrix equation below?

3/2{x,6,8,4}+y{1,4,3,2}={z, z,6z,2}

A. -2
B. 1
C. 2
D. 3

Asilkworm winds its cocoon out of one long silk fiber. to make silk thread, 3 to 10 of these silk fibers are unwound from their cocoons and combined into aa single thread with a typical length of 300 yards. choose a reasonable number of silk fibers in a thread write an equation to find the total length of the silk fibersused in 300 yards of the thread

If x + 10 = 70, what is x? a. 40 b. 50 c. 60 d. 70 e. 80

The length of a rectangular piece of land is 92 yards more than three times its width. the perimeter is 760 yards. find its dimensions.