What is the sum of a 6-term geometric series if the first term is 23 and the last term is 1,358,127? 1,395,030 1,461,460 1,527,890?

Last term is 1,527,890.

Step-by-step explanation:

In this question a geometric series has been given  with

first term A = 23

6th term     = 1,358,127

Number of terms n = 6

we have to calculate the sum of this geometric series

we know

r = 9

Now we know the formula to sum a geometric series is

S = 23 ×

S = 23 ×

S = = 23 × 66430

S = 1,527,890

option 1 is correct.

step-by-step explanation:

y varies inversely with x and constant of variation is 4

the equation will be:

y = k/x

where k =4 so,

y = 4/x

if we put values of x of option 1 in the above equation and find values of y

y = 4/-2 => y =-2

y = 4/-1 => y = -4

y = 4/1 => y = 4

y = 4/2 => y =2

so, all the values of x and y are correct.

if we put values of x given in other options and find value of y we cannot find whole table satisfying the equation.

hence option 1 is correct.

step-by-step explanation: