1: ------------> √x=10
2: ------------>√x-1=3
3: ------------>4√x-7=13
4: ------------>√3x=9
5: ------------>√8x+3=7
6: ------------>√x=2
2007-05-23 06:22:35 · 7 answers · asked by WoW131 1 in Science & Mathematics ➔ Mathematics
1: Square both sides: x = 10^2 = 100
2: sqr[x] = 3+1 = 4
x = 4^2 = 16
3: 4sqr[x] = 13 +7 = 20
sqr[x] = 20/4 = 5
x = 5^2 = 25
4: sqr[3x] = 9
3x = 9^2 = 81
x = 81/3 = 27
5: sqr[8x] = 7-3 = 4
8x = 4^2 = 16
x = 16/8 = 2
6: x = 2^2 = 4
2007-05-23 06:28:38 · answer #1 · answered by kellenraid 6 · 0⤊ 0⤋
1. 100 since 10 x 10 = 100
2. 16 since 4 x 4 = 16 and 4 - 1 = 3
3. 25 since 13 + 7 = 20, and 20 / 4 = 5, and 5 x 5 = 25
4. 24 since 9 x 9 = 81, and 81 / 3 = 24
5. 2 since 7 - 3 = 4, and 4 x 4 = 16, and 16 / 8 = 2
6. 4 since 2 x 2 = 4
2007-05-23 13:34:17 · answer #2 · answered by Anonymous · 0⤊ 0⤋
1) 10 = sqrt(x)
10^2 =x
100=x
2) âx-1=3
âx=4
x=16
3) 4âx-7=13
4âx=20
x=20^4
x=160,000
unless it is 4xâx then x=25
4) â3x=9
3x=81
x=27
5) â8x+3=7
â8x=4
8x=16
x=2
6) âx=2
x=4
unless there are meant to be brackets then
2) x=10
3) x=28568
unless it is 4x sqrt x-7 then it is
x=2711
5) x=5.75
2007-05-23 13:27:07 · answer #3 · answered by Anonymous · 0⤊ 0⤋
i am assuming you need to find x?
1: âx=10
square both sides to get x = 100
2:âx-1=3
move 1 to the other side and square
âx = 4 so x = 16
3: 4âx-7=13
4âx = 20
âx = 5 so x = 25
4:â3x=9
3x = 81
x = 27
5: â8x+3=7
â8x = 4
8x = 16
x = 2
6:âx=2
x = 4
good luck
2007-05-23 13:28:30 · answer #4 · answered by Ana 4 · 0⤊ 0⤋
All of these assume that when you write âx-1=3 you mean â(x-1), not (âx) - 1
1. x = 100
2. x-1 = 9
x = 10
3. x-7 = 169/16 = 10-9/16
x = 17-9/16
4. x = 27
5. 8x +3 = 49
8x = 45
x = 45/8
6. x = 4
2007-05-23 13:29:31 · answer #5 · answered by TychaBrahe 7 · 0⤊ 0⤋
Square root of 100 is 10.
Square root of 16 is 4-1=3
25 and the square root is 5.
square root of 3 X3 =9
Square root of -1 is -1
2 is the square root of 4.
Memorize your square roots.
sqrt of 1 is 1
sqrt of 4 is 2
sqrt of 9 is 3
sqrt of 16 is 4
sqrt of 25 is 5
sqrt of 36 is 6
sqrt of 49 is 7
sqrt of 64 is 8
sqrt of 81 is 9
sqrt of 100 is 10
sqrt of 121 is 11
sqrt of 144 is 12
sqrt of 169 is 13
Remember , remember , remember
2007-05-23 15:17:54 · answer #6 · answered by Kandice F 4 · 0⤊ 0⤋
you need to try to get the radical on one side of the equal sign by itself, and then all you have to do is square both sides of the equal sign,
1) x = 100
2) x = 16
3) x = 25
4) x = 27
5) x = 2
6) x = 4
2007-05-23 13:36:28 · answer #7 · answered by Ray 5 · 0⤊ 0⤋