They are easy..but I don't have the answers to this...
Simplify:
3√12 / 6 √15
Expand and simplify:
a) (3√2-4)(√3-√2)
b) (√7+2)²
20. Simplify 3/√5+2 - √2/2√2-1 writing your answer with a rational denominator
Simplify
3/x - 2 + 1/ x + 3 - 2/ x² + x - 6
2007-01-31 19:04:56 · 5 answers · asked by Orpheus Muse 1 in Science & Mathematics ➔ Mathematics
3√12 / (6 √15) = 6√3/(6√5)=√15/5
a) 3√6 - 4√3 + 4√2 - 6
b) 9+4 - 6√7
(3√5-6) - (4-√2)/7 = (21√5 +√2 - 46)/7
(4x + 5)/(x^2 + x - 6)
2007-01-31 19:17:21 · answer #1 · answered by a r 3 · 0⤊ 0⤋
Simplify:
3√12 / 6 √15
Square the outer numbers and bring inside the root sign:
3 x 3 =9 and 6 x 6 = 36, so √(9 x 12)/ √(36 x 15) = √108/ √540
which is simply √0.2
2007-01-31 19:36:52 · answer #2 · answered by Barry N 2 · 0⤊ 0⤋
You have to be exact with your typing.
In question 20, do you mean 3/sqrt5 + 2 or do you mean 3/(sqrt5 + 2)?
Similarly, second expression is open to doubt.
As an aside, I would like to know how to obtain sqrt sign.
2007-01-31 21:03:19 · answer #3 · answered by Como 7 · 0⤊ 0⤋
Say 'x' is the unique fee. If x grow to be decreased via 23%, that signifies that $270 is seventy seven% of the x (the unique fee). seventy seven% = .seventy seven So your equation should be: 0.77x = 270 x= $350.sixty 5
2016-12-03 07:41:35 · answer #4 · answered by ? 4 · 0⤊ 0⤋
Just out of curiosity what grade is this?
2007-01-31 19:14:53 · answer #5 · answered by Anonymous · 0⤊ 0⤋