已知:5.21=2.283,52.1=7.281,35.21=1.734,352.1=3.735,则5210=______,30.0521=______.

已知:5.21=2.283,52.1=7.281,35.21=1.734,352.1=3.735,则5210=______,30.0521=______.

题型:填空题难度:简单来源:不详
已知:


5.21
=2.283,


52.1
=7.281,
35.21

=1.734,
352.1

=3.735,则


5210
=______,
30.0521

=______.
答案


52.1
=7.281,


5210
=


52.1
×


100
=7.281×10=72.81;
352.1

=3.735,
30.0521

=
3
52.1
1000

=
352.1

10
=
3.735
10
=0.3735.
故答案为:72.81;0.3735.
举一反三
3x

=3,则x=______.
题型:填空题难度:一般| 查看答案
1,
34

39

,2
32

…符合这个规律的第六个数是______.
题型:填空题难度:一般| 查看答案
已知y=x3+8,且y的算术平方根为4,求x.
题型:解答题难度:一般| 查看答案
若一个数的立方根就是它本身,则这个数是______.
题型:填空题难度:一般| 查看答案


64
的立方根是(  )
A.8B.±2C.4D.2
题型:单选题难度:一般| 查看答案
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