Answer:
4th term = -5.
Step-by-step explanation:
a1 = 2
an = 2an-1 - 3
So a2 = 2*2 - 3 = 1
and a3 = 2*1 - 3 = -1
and a4 = 2*-1 - 3 = -5.
Answer:
C
Step-by-step explanation:
A can be from 2- 9 ( 8 digits)
B can be 0 to 9 (10 digits)
C can be 0 to 9 (10 digits)
Each of the X's can be 0 to 9 (10 digits)
To get the number of possibilities, we multiply them to get:
8 * 10 * 10 * 10 * 10 * 10 * 10 = 8,000,000
But now, 1 number (867-5309) is restricted, so the number of possibilities decrease by 1:
8,000,000 - 1= 7, 999, 999
Correct answer is C
The ratio is equal to 9 parts (5+4=9). Total (720)/ Total parts (9)= 80
80x5=400 (money saved)
80x4= 320 (money spent)
Volume=length times width times height
given
volume=576
length=12
width=6
height=?
576=12 times 6 times ?
576=72 times ?
divide both sides by 72
8=?
8 layers