I need some help on my Algebra 2 problems.
Can you simplify those problems:
1) square root of 18 divided by square root of 5
2)1 divided by square root of 7
2006-09-21 11:52:02 · 7 answers · asked by Anonymous in Education & Reference ➔ Homework Help
To "simplify" these, you need to eliminate the radical in the denominator and make sure to bring any perfect square factors out from under the radical sign.
For example, in 1) multiply the top and bottom by sqrt(5) and also recognize that sqrt(18) is the same as 3sqrt(2). Therefore, the simplified form of this expression will be 3sqrt(10)/5.
In 2) just multiply top and bottom by sqrt(7), so you get sqrt(7)/7.
That's all you need to do. Do NOT plug these into your calculator and get decimalize answers. That's not what they want!
2006-09-21 12:04:09 · answer #1 · answered by just♪wondering 7 · 0⤊ 0⤋
1. Rationalize the fraction by multiplying root 5 to both numerator and denominator.
root 90 / 5
then simplify the square root: root 90 = 3 * root 10
So the answer is 3/5 * root 10
2. Same technique as question1 - multiply both numerator and denominator by root 7.
root 7 / 7 will be your answer
2006-09-21 18:57:06 · answer #2 · answered by Isaac 2 · 0⤊ 1⤋
the square root of 18 is 324 divided by square root of 5 which is 25 is 12.65
one divided by square root of seven could be 1/49
2006-09-21 18:58:22 · answer #3 · answered by jdukenumber1 4 · 0⤊ 1⤋
1)
sr of 18 =4.2426406
sr of 5=2.2360679
=1.8973666
2)
1 divided by 2.6457513=.3779644
2006-09-21 21:24:44 · answer #4 · answered by newsgirlinos2 5 · 0⤊ 0⤋
easy
9 divided by 2.5 divided by 3.5 easy = 1.0285714
2006-09-21 18:57:46 · answer #5 · answered by miapia87 2 · 0⤊ 1⤋
1): 1.8973666
2): .3779645
2006-09-21 19:06:58 · answer #6 · answered by philmusic0337 1 · 1⤊ 0⤋
1. 1.6
2006-09-21 18:56:49 · answer #7 · answered by DevilHunter 2 · 0⤊ 1⤋