2006-08-13 04:15:16 · 7 answers · asked by chica chiica 1 in Education & Reference ➔ Homework Help
the answers i see are correct you do it simalaily to long div ie
9squared =81 leaves6and so on best to use a calculator
2006-08-13 05:44:19 · answer #1 · answered by barbariandarrylgellatly 3 · 0⤊ 0⤋
root 87 = root 3 * 29 = root 3 * root 29
3 and 29 are both prime numbers thus thier root is not an exeact number
thus root 89 is not a whole number
by the calculator it is equal to 9.3 rounded to 2 s.f.
2006-08-13 15:30:14 · answer #2 · answered by Rachel 3 · 0⤊ 0⤋
Hmmm... lemme see... the sqrt(81) = 9, sqrt(100) = 10... so it must be somewhere between them...
87 - 81 = 6
100-81=19
6/19 is about 1/3...and 1/3 * (10-9) = 1/3 or about 0.33
9 + 0.33 = 9.33
9.33^2 = 87.0489 .. hmmm... 0.0489 too high...
but probably closer than 9.32.. but let's see... 9.32^2 = 86.86... yes... 9.33 is closer... so it is good to 2 decimal places...
Sqrt(87) = 9.33 to 2 decimal places... it is probably more like 9.325.. or a bit higher
2006-08-13 11:40:48 · answer #3 · answered by ♥Tom♥ 6 · 0⤊ 0⤋
you know, calculators are a lot more reliable than people are and you have a calculator right there on your computer.
2006-08-13 11:21:04 · answer #4 · answered by nc_strawberry 4 · 0⤊ 0⤋
i can give you that but why not use a calculator?
2006-08-13 11:26:11 · answer #5 · answered by pumpkinism 3 · 0⤊ 0⤋
9.327379
2006-08-13 11:20:58 · answer #6 · answered by trifreak 2 · 0⤊ 0⤋
9.3273790530888150455544755423206
2006-08-13 11:21:36 · answer #7 · answered by mommadillo 4 · 0⤊ 0⤋