If you increse three times a certain number by 4, the square root of the result is 11, find the number.
2007-12-18 16:59:29 · 4 answers · asked by Herk Kulease 1 in Science & Mathematics ➔ Mathematics
Hmmm, no quadratic needed for this one...
( 3x + 4 ) = 121
3x = 117
x = 39
Sure enough, 3 x 39 is 117 and increased by 4 is 121, the square root of which is eleven.
2007-12-18 17:09:25 · answer #1 · answered by jgoulden 7 · 0⤊ 0⤋
x+12=11^2
x=109
2007-12-18 21:14:13 · answer #2 · answered by techno_cart 1 · 0⤊ 0⤋
sqrt(x+4+4+4)=11
Then x+12=121
Then x=109.
What means "increase three times a certain number by 4"? :S
I am assuming it means doing three times the following: "increase a certain number by 4"
2007-12-18 17:06:17 · answer #3 · answered by obueno 2 · 0⤊ 2⤋
sq (3x + 4) = 11
x = 39
2007-12-18 17:07:02 · answer #4 · answered by Ana 4 · 0⤊ 0⤋