Question

PLEASE HELP ME FAST !!!!!!!

A bag contains 28 blue marbles and 12 red marbles. If Milton removes two marbles without replacing them, what is the probability that the first marble will be blue and the second one will be red?

A) 21/100

B) 77/390

C) 14/65

D) 1/4


2) An airplane climbs at a slope of 2525 at takeoff. At point A, the plane is 200 feet above the ground. The plane traveled 1,000 feet horizontally, as shown in the diagram below.





What is the altitude of the plane (b) at Point B?


A) 600 ft.

B) 2,500 ft.

C) 200 ft.

D) 400 ft.

thank you :)

Answer 1

28 blue marbles....12 red marbles......total of 40 marbles

probability of first marble being blue : 28/40 reduces to 7/10
not replacing
probability of second marble being red : 12 / 39

probability of both : 7/10 * 12/39 = 84/390 reduces to 14/65 <==
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sorry...cannot do the second one without the diagram