Pl i need hel

Use an inverse matrix to solve the system of equations, if possible.

x + 5y – 3z = –10

–5x + 6y – 5z = –21

–x + 8y – 8z = –25

Question 1 options:

(1,-1,2)

(-6,-5,2)

(-6,-2,-2)

no solution
Graph the region corresponding to the solution of the system of constraints.

f(x, y) = 3y + x
x ≥ 0
y ≥ –2
8x + 12y ≤ 92
11x + 7y ≤ 79
x + y ≥ 5

Factor completely. x^8 - 1/81 a) (x^4 + 1/9)(x^2 + 1/3)(x^2 - 1/3) b) (x^4 - 1/9)(x^2 + 1/3)(x^2 - 1/3) c) (x^4 + 1/9)(x^2 - 1/3)2

Complete the truth table a. t, f, f, t b. t f f f c. f t f t d f t f t

1. preform the indicated operation. then estimate to see whether the proposed result is reasonable. 811.1 - 8.039 803.071 803.061 803.161 831.061 2. the ordered pair (1, 2) lies in which quadrant? quadrant ii quadrant iv quadrant iii quadrant i 3. sean tries to drink 3 liters of water every day how my millimeters of water does he drink in a day? 0.3 ml 0.003 ml 3,000 ml 30 ml 4. find the least common multiple. (lcm). 10, 36 5 180 20 360