What is the solution to the following system?
4x + 2y – 2z = 1
2x + 8y + 4z = 32
30x + 12y – 4z = 24
a.(-2, 5, 1)
b.(-2, 6, -3)
c.(1,2,3)
d.(2,-4, 0)

10% of 1,900,000. show me how you got the answer

List x1, x2, x3, x4 where xi is the left endpoint of the four equal intervals used to estimate the area under the curve of f(x) between x = 4 and x = 6. a 4, 4.5, 5, 5.5 b 4.5, 5, 5.5, 6 c 4.25, 4.75, 5.25, 5.75 d 4, 4.2, 5.4, 6

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2