Answer:
126.
Step-by-step explanation:
This is the number of combinations of 4 cards from 9 cards:
= 9C4
= 9! / 4! 5!.
A quick way of calculating this is
9*8*7*6
----------- = 9*2*7 = 126 combinations.
4*3*2*1
45% of Alicia's songs are types of other songs.
Example:
35% + 20%= 55% 55%+ 45% = 100%
Answer:
1. E, 2. F, 3. D, 4. B, 5. C, 6. A
Step-by-step explanation:
Answer:
8.2786 x 10 to the second power, 7.313 x 10 to the second power
Step-by-step explanation:
A1 = -7, an = 4(an - 1)
a2 = 4a1 = 4(-7) = -28
a3 = 4a2 = 4(-28) = -112
Therefore, the first six terms are -28, -112, -448, -1792, -7168, -28,672
