Answer:
C
Step-by-step explanation:
The common ratio can be < 0
All that means is the entry's signs alternate.
For example
r = - 2
a = 3
Series = 3 -6 18 -54 etc. The members of the series become larger and larger in magnitude and the series diverges. It is not clear where it might stop.
-1 < r < 0 gives a much better behaved result.
The point is that c is incorrect.
Answer:
12.55
Step-by-step explanation:
Lets say that the day they both take off is day 0.
The next day Sandy takes off will be day 4, and Morgans will be day 10.
Sandy will take off 4, 8, 12, 16, and 20.
Morgan will take off 10, 20, 30, 40, and 50.
Both Morgan and Sandy take off day 20, so the next time they have a day off together will be in 20 days.
Answer:
2/5
Step-by-step explanation:
expressing 1 1/2 in an improper fraction:
1 1/2 = 3/2
Hence
(3/5) ÷ (1 1/2)
= (3/5) ÷ (3/2) (convert divide to multiply by flipping divisor fraction)
= (3/5) x (2/3)
= (3 x 2) / (5 x 3)
= 6/15 (divide both numerator and denominator by 3)
= 2/5
Cd+e = 21
Cd + e - e = 21 - e
Cd = 21 - e
Cd/C = 21-e/C
d = 21-e/C.
