√398
a. 19.955
b. 19.947
c. 398.000
d. 19.950
2007-12-17 04:45:55 · 13 answers · asked by . 1 in Science & Mathematics ➔ Mathematics
Greetings,
sqrt (398)
sqrt(400 - 2)
20sqrt(1 - 1/200)
sqrt(1 - .005)
= (1 - 0.005)^1/2
= 1 + 1/2*(-.005) + smaller terms
= 1 - .0025
= .9975
20*.9975 = 19.950
The answer is d)
Regards
2007-12-17 04:54:44 · answer #1 · answered by ubiquitous_phi 7 · 0⤊ 0⤋
It's almost going to be 20 (because 20² = 400).
Plugging it into my calculator I get:
sqrt(398) = 19.9499373
That rounds to 19.950 which would be D.
2007-12-17 04:49:26 · answer #2 · answered by Puzzling 7 · 0⤊ 0⤋
√398=19.9499
=19.950
2007-12-17 04:52:49 · answer #3 · answered by pioneers 5 · 0⤊ 0⤋
√398 = 19.94993734
= 19.955
2007-12-17 04:49:55 · answer #4 · answered by Pranil 7 · 0⤊ 1⤋
d
2007-12-17 05:10:35 · answer #5 · answered by someone else 7 · 0⤊ 0⤋
d
2007-12-17 04:52:03 · answer #6 · answered by Anonymous · 0⤊ 0⤋
d
2007-12-17 04:49:57 · answer #7 · answered by slayer maniac 3 · 0⤊ 0⤋
d
2007-12-17 04:49:34 · answer #8 · answered by Anonymous · 0⤊ 0⤋
d
2007-12-17 04:48:40 · answer #9 · answered by Anonymous · 0⤊ 0⤋
c. 18.248 using the calculator.
2016-05-24 08:54:51 · answer #10 · answered by Anonymous · 0⤊ 0⤋