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1.When a polynomial P(x) is divided by 2x-3, the remainder is R. If P(x) is divided by 3-2x,find the remainder. 2.If a:b=b:c=c:d, then a:d=? 3.A lake with actual area of 10cm^2 if represented by an area of 1.6cm^2 on the map. Find representative fraction of the map. 諗左好耐都唔明,請各位幫幫手,thx! 更新: 4. The radius of a sphere is 40mm, which is corrected to 1sig.fig. Find the percentage error of ots volume
最佳解答:
1. Let P(x)=(2x-3)Q(x)+R P(x)=(3-2x)[-Q(x)]+R the remainder is R 2. a/b=b/c=c/d ac=b2,a=b2/c bd=c2,d=c2/b a:d=(b2/c)/(c2/b)=b3/c3=b3:c3 3. 1.6/10=(1/x)2 x=2.5 Ans 1:2.5 4. 35mm≦radius＜45mm (453-403)/403=42.4%
其他解答:8410E5B82AE3BBEE
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F4-F6幾題數唔明發問:
1.When a polynomial P(x) is divided by 2x-3, the remainder is R. If P(x) is divided by 3-2x,find the remainder. 2.If a:b=b:c=c:d, then a:d=? 3.A lake with actual area of 10cm^2 if represented by an area of 1.6cm^2 on the map. Find representative fraction of the map. 諗左好耐都唔明,請各位幫幫手,thx! 更新: 4. The radius of a sphere is 40mm, which is corrected to 1sig.fig. Find the percentage error of ots volume
最佳解答:
1. Let P(x)=(2x-3)Q(x)+R P(x)=(3-2x)[-Q(x)]+R the remainder is R 2. a/b=b/c=c/d ac=b2,a=b2/c bd=c2,d=c2/b a:d=(b2/c)/(c2/b)=b3/c3=b3:c3 3. 1.6/10=(1/x)2 x=2.5 Ans 1:2.5 4. 35mm≦radius＜45mm (453-403)/403=42.4%
其他解答:8410E5B82AE3BBEE
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