Seven girls' names and four boys' names are placed in a hat. One name is drawn annd replaced. A second name is drawn. What is the probability that both names drawn are girls names?
Which of the points is on the line segment with endpoints (-3,-8) and (3,10)?
2007-07-28 12:42:02 · 2 answers · asked by Anonymous in Education & Reference ➔ Homework Help
49/121
2007-07-28 12:44:41 · answer #1 · answered by Goddess of Grammar 7 · 0⤊ 0⤋
7 girl's names and 4 boy's names, total of 11 names
the probability of picking a girl's name is 7/11
since the name is replaced back, there is still 11 names to pick on the second time.
so 7/11 * 7/11 = 49/121
find the equation
m = (y2 - y1) / (x2 - x1)
m = (10 - (-8)) / (3 - (-3))
m = 3
10 = 3(3) + b
b = 1
y = 3x + 1
since it is a segment, the points on the segment must be between x = -3 and x = 3
so y = 3x + 1, -3 ⤠x ⤠3
2007-07-28 19:52:25 · answer #2 · answered by 7 · 0⤊ 0⤋