Answer:
C
Step-by-step explanation:
For a geometric sequence the n th term is
= 
, hence
= r = 6 → (1)
= 
= 54 → (2)
divide (2) by (1) cancelling , hence
= 
hence 
= 9 ( take the square root of both sides )
r = 3 → C
Answer:
The tall side
Step-by-step explanation:
The total amount of money Debra earns is the sum of her wage and the tip. Since she earns $7.50 per hour and she worked for 24 hours, her weekly wage is 180. Suppose we let x be the amount of tip, her total earnings is 180 + x. This amount should be more than $250.
180 + x > 250
x > 70
Thus, Debra should receive more than $70 tip.
Answer:
no solutions
Step-by-step explanation:
x+y=2
2x+2y=8
Multiply the first equation by -2
-2x -2y = -4
Add this to the second equation
-2x -2y = -4
2x+2y=8
--------------------
0x+0y = 4
0=4
This is never true
so there are no solutions
