pre cal prob please help.
2007-09-17 07:00:27 · 6 answers · asked by icygurl205 1 in Science & Mathematics ➔ Mathematics
16x^2=121. Take square roots of both sides
4x = plus or minus 11
x = plus or minus 11/4
2007-09-17 07:07:03 · answer #1 · answered by fcas80 7 · 0⤊ 1⤋
x ² = 121 / 16
x = ± 11 / 4
2007-09-17 14:06:57 · answer #2 · answered by Como 7 · 2⤊ 0⤋
x^2 = (121/16)
x = 11/4 or -11/4
2007-09-17 14:06:30 · answer #3 · answered by PMP 5 · 0⤊ 0⤋
16x^2=121
x^2=121/16
x=+/-11/4 ANS.
2007-09-17 14:09:17 · answer #4 · answered by Anonymous · 0⤊ 1⤋
16x^2=121-----------divided by 16
x^2=121/16---------take sqrt
x=+11/4 or-11/4
2007-09-17 14:08:39 · answer #5 · answered by Anonymous · 0⤊ 1⤋
You don't need the quadratic eq'n here, as there is no x-term:
Take square roots of both sides: +/- 4x = +/- 11, and so x = +/-11/4
2007-09-17 14:07:29 · answer #6 · answered by John V 6 · 0⤊ 1⤋