We know the number of all ways to take one marble and then take another marble is: 10x9=90
The first time, Jamie wants to pick a white and the ways is: 3
Now we have only 9 marble with 2 white and 7 blues, she has 7 ways to take a blue . So, she has 3x7=21 ways to take what she wants.
And we do the division 21:90=7/30. and that is the answer
Answer:
840
Step-by-step explanation:
7, 14, 42, 168, ?
7 x 2 = 14
14 x 3 = 42
42 x 4 = 168
you see the pattern?
hence,
168 x 5 = 840 (ans)
21r < 7
Divide by 21
r < 7/21
Answer:
Step-by-step explanation:
4 - 2x - 8x > -6x - 16
4 - 10x > -6x - 16
4 - 4x > -16
-4x > -20
x < 5
