24^2+0.8x^2=x^2
圖:
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急 簡單maths
2007-04-15 8:56 pm
回答 (4)
2007-04-15 10:05 pm
24^2+0.8x^2=x^2
=24^2+0.64
=576+0.64
=576.64
=24^2+0.64
=576+0.64
=576.64
2007-04-15 9:07 pm
24^2+0.8x^2=x^2
0.2 x^2 = 576
x^2 = 2880
x = 53.7 or -53.7 (cor to 3 sig.fig.)
0.2 x^2 = 576
x^2 = 2880
x = 53.7 or -53.7 (cor to 3 sig.fig.)
參考: me
2007-04-15 9:02 pm
x² - 0.8x² = 576
0.2x² = 576
2x² = 5760
x = √2880
x = 53.7 (corr to 3 sig. fig.)
0.2x² = 576
2x² = 5760
x = √2880
x = 53.7 (corr to 3 sig. fig.)
2007-04-15 9:02 pm
圖片參考：http://xs114.xs.to/xs114/07150/1155.png
0.2 x^2 = 24^2
0.2 x^2 = 576
x^2 = 2880
x = 4√180 = 12√20 = 24√5
收錄日期: 2021-04-12 19:17:37
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