39 pounds of water and 48 pounds of brick dust. Spill 13 lbs of mixture. Each brick require 7 pounds. How many bricks can I make.

3-12. write each answer with a reasonable number of figures. find the absolute uncertainty and percent relative uncertainty for each answer. (a) [12.41 (±0.09) + 4.16 (±0.01)] x 7.068 2 (±0.000 4) =? (b) [3.26 (±0.10) x 8.47 (±0.05)] - 0.18 (±0.06) =? (c) 6.843 (±0.008) x 104 + [2.09 (±0.04)- 1.63 (±0.01)] =?

Solve this equation using substitution. {4x + y = −2} {4x + 6y = 44}

What is x3+3x2−16x−48 divided by x−1?