If three arthmethic means are are inserted between -15 and 9,find the first of these arthmetic means.

- 9

Step-by-step explanation:

We require

- 15 , m₁, m₂, m₃, 9

The average of the end values gives m₂ , that is

m₂ = = = - 3

Similarly, the average of - 15 and m₂ gives m₁

m₁ = = = - 9

The first arithmetic mean m₁ = - 9

a

step-by-step explanation:

answer: 1,380

step-by-step explanation:

1: you turn %15 into a decimal by moving the decimal point two places to the left.

2: and then you multiply .15 by 1,200 , which will get you 180.00

3: from there you will add 180 to 1,200

4: which will get you 1,380

hope it *im kind of slow so idk if my answer is right*