(40 points) what is the recursive rule for the sequence? −7.4, −21.2, −35, −48.8, −62.6,  an=an−1−13.8 , where a1=−7.4 an=an+1+13.8 , where a1=−7.4 an=an+1−13.8 , where a1=−7.4 an=an−1+13.8 , where a1=−7.4

a1 = -7.4

an = an-1 - 13.8

Step-by-step explanation:

To find the common difference  take the second term and subtract the first term

-21.2 - (-7.4) = -13.8

Check by taking the third term and subtracting the second term

-35 - (-21.2) = -13.8

The common difference is -13.8

The first term is -7.4

Recursive rule

Means finding the next term in terms of the previous

a1 = -7.4

an = an-1 - 13.8

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk

answer: median

step-by-step explanation:

the median is the middle value when a data set is ordered from least to greatest