Find the m if the sequence 8m+1, 6m-2, 2m-9 is an arithmetic sequence.

m = - 2

Step-by-step explanation:

The terms between consecutive terms have a common difference, that is

a₂ - a₁ = a₃ - a₂ ( substitute values )

6m - 2 - (8m + 1) = 2m - 9 - (6m - 2) ← distribute parenthesis on both sides

6m - 2 - 8m - 1 = 2m - 9 - 6m + 2 , that is

- 2m - 3 = - 4m - 7 ( add 4m to both sides )

2m - 3 = - 7 ( add 3 to both sides )

2m = - 4 ( divide both sides by 2 )

m = - 2

a. the are of the rectangle is 18.25

b. 18.25 times two is 36.50

rae me : d

nothjing

step-by-step explanation: