標題:
此文章來自奇摩知識+如有不便請留言告知
F.1 maths
發問:
1) 1/3, 3/7, 5/11, 7/15, ...... What is the number pattern?2) Find the acute angel between the hour-hand and minute-hand of a clock at 1:15.3) Evaluate this question and give the answer as percentages. 20% x 60% ÷ 120%4) The selling price of a piece of toy is $52.25 if it is sold at a discount of... 顯示更多 1) 1/3, 3/7, 5/11, 7/15, ...... What is the number pattern? 2) Find the acute angel between the hour-hand and minute-hand of a clock at 1:15. 3) Evaluate this question and give the answer as percentages. 20% x 60% ÷ 120% 4) The selling price of a piece of toy is $52.25 if it is sold at a discount of 5%. What is the marked price of the toy? * Please show all the steps.
最佳解答:
1) 1/3, (1+2)/(3+4) , (3+2)/(7+4), the number pattern is (1+2(n-1))/(3+(n-1)) for n=1,2,.... 2) The angle should be 90 degree because the angle between .the hour-hand and minute-hand is a quarter of circle. 3) 20% x 60% ÷ 120% = 10= 10*100% = 1000% 4) marked price = 52.25*(1-5%) = 49.64 the marked price of the toy is $49.64
其他解答:
1)1/3 中既1+2 既3+4 =3/7 同樣地 第5個鞐係 9/19
留言列表
