[tex]4)v = \frac{4}{3} \pi r {}^{3} \\ 5)9x - 14 = - 3x - 2 \\ 12x = 12 \\ x = 1 \\ \\ 24x - 9(x - 8) = - 18 \\ 24x - 9x + 72 = - 18 \\ 15x = - 90 \\ x = - 6 \\ \\ \frac{9x - 4}{5} - \frac{6x - 1}{7} = 5 \\ 7(9x - 4) - 5(6x - 1) = 175 \\ 63x - 28 -30x + 5 = 175 \\ 33x = 198 \\ x = 6[/tex]
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[tex]4)v = \frac{4}{3} \pi r {}^{3} \\ 5)9x - 14 = - 3x - 2 \\ 12x = 12 \\ x = 1 \\ \\ 24x - 9(x - 8) = - 18 \\ 24x - 9x + 72 = - 18 \\ 15x = - 90 \\ x = - 6 \\ \\ \frac{9x - 4}{5} - \frac{6x - 1}{7} = 5 \\ 7(9x - 4) - 5(6x - 1) = 175 \\ 63x - 28 -30x + 5 = 175 \\ 33x = 198 \\ x = 6[/tex]