I do not even know where to begin, can someone help me?
2007-07-24 06:29:30 · 5 answers · asked by spiritmoonshine 1 in Science & Mathematics ➔ Mathematics
sqrt (75a^2) / sqrt 5
= sqrt (75a^2 / 5)
= sqrt (15a^2)
= (sqrt 15) * (sqrt a^2)
= (sqrt 15) (a)
= a sqrt 15
2007-07-24 06:34:03 · answer #1 · answered by Mathematica 7 · 0⤊ 0⤋
â(75a ² ) / â5
= â [(3 x 25) a ² ] / â5
= 5â3 a / â5
= â5 â3 a
= â15 a
2007-07-24 14:35:22 · answer #2 · answered by Como 7 · 0⤊ 0⤋
multiply by sqare root of 5 over the square root of 5.
giving squareroot of 375 a^2/ square root of 25
=5a squareroot of 15 / 5
=a squareroot of 15
2007-07-24 13:33:44 · answer #3 · answered by jnice160 2 · 0⤊ 0⤋
sqrt ( 75a^2) / sqrt (5)
now
sqrt (75a^2) = sqrt ( 25*5*a^2)
but sqrt(25a^2)= 5a
hence sqrt (75a^2) = 5a sqrt(5)
so
sqrt(75a^2)/sqrt(5) = 5a sqrt(5)/sqrt(5) = 5a
2007-07-24 13:39:40 · answer #4 · answered by Anonymous · 0⤊ 0⤋
a * sq. root of 15
2007-07-24 13:36:15 · answer #5 · answered by Mike 1 · 0⤊ 0⤋