由 micht » 2004-11-29 13:09
貼題目這樣才有人會回答...不然還要去找 ...(懶) i12
Q12:
In the xy-plane, region R consists of all the points (x, y) such that 2x + 3y = 6. Is the point
(r, s) in region R ?
(1) 3r + 2s = 6
(2) r = 3 and s = 2
Q30:
Total number of Boys=18
Total number studying boiology=26 [我把table裡面numbers直接打出來]
The table above shows the number of students in a certain high school class who are boys
and the number of students in the class who are studying biology. What is the total
number of students in the class?
(1) Of the boys in the class, 15 are studying biology.
(2) The number of girls in the class is twice the number of students in the class who
are not studying biology.