[計量] 抱歉低能的小弟有有兩題數學問題了...>"<
抱歉一直洗版面~等等問完題目後自刪!@@
第一題是:
in a certain school, 75 students are enrolled in english, 85 students are
enrolled in math emetics, and 60 students are enrolled in both.
cola:
The ratio of the number of students enrolled in both English and math
emetics to the number of students enrolled in English
colb: 3/5
答案是B比較大@口@!!!!!我怎麼算都是A內....>"<
第二題是:
Q ____ S
1 1
1 1
P 1____1T QPTS是正方形啦..小弟不知道怎麼畫圖>"< 然後QS上面有一個三角形
就是QS為底邊 上面有一個R點是三角型的頂點~
The area of square PQST in the figure above is 100, If QR=RS (QR跟RS夾的
角垂直) what is the perimeter of 三角形QRS?
A:5根號2+10
B:20
C:10根號2+10
D:30
E:20根號2+10 答案是C 為什麼.........懇請大大出手相救@@
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