Let us check series : -10 /-2 = 5 -50/-10 = 5
so it is a geometric series with a= -2 and r= 5
sum formula for n terms of geometric series = a ( r^n -1 ) /( r-1)
here we find S5 that is n= 5 = -2 ( 5^ 5 - 1) /( 5-1)
= -2 ( 3125 -1) / 4 = -1562
second series is : 1.5/1 = 1.5 2.25/1.5 = 1.5
this is also geometric series but n = 12 a= 1 and r= 1.5
we use same formula
S12 = 1 ( (1.5) ^12 -1) /( 1.5-1) =
128.74 / 0.5 = 257.49
Last is 2/1= 2 4/2 = 2 8/4 = 2 so r = 2 a = 1 and n = 12
we use same formula 1 ( 2^12 - 1) / (2-1)
= 4095
Answers : -1562 , 257.49 , 4095
Answer:
4 : 3
Step-by-step explanation:
Because when you divide 24 by 6 and divide 18 by 6. It would be 4 : 3
Answer: 2 1/10
Step-by-step explanation:
21 : 10
Step 1: to write as a fraction= 21/10
2 1/10
Answer:
1/6
Step-by-step explanation:
So we make a fraction with yellow as a numerator and the total as the denomonator. From the infromation in the table the fraction would be 3/18. We simplify this to 1/6. I hope this helps.
