1.It is known that the L.C.M of a given nomber and 48 is 144.Find two possible values of the given number.
2.It is known that the product of 4.5 and y is not less than 9.
(a) Formulate an inequality to represent the above relation.
(b) Write down three integers that satisfy the inequality in (a).
3.
maths問題
2011-08-16 6:34 am
回答 (1)
2011-08-16 7:44 am
✔ 最佳答案
1)144 = 2⁴ x 3²48 = 2⁴ x 3Possible required numbers :3² = 9 or 2 x 3² = 18
or 2² x 3² = 36
or 2³ x 3² = 72
or 2⁴x 3² = 144
2a)4.5y ≥ 9y ≥ 9 / 4.5y ≥ 2
b)2 , 3 , 4 ...... are satisfy the inequality.
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