A sum of money was to be shared among three friends Kim, Treisha, and Ann, in the ratio 5:7:9 respectively. If Ann received $900.00, find the sum of money that was
shared between the three friends.

$7700

Step-by-step explanation:

Let x represent the amount of money given to the three friends to share.

Keisha, Tracey, and Kerry-Ann shared the money in the ratio 5:7:9 respectively.

Since Ann received $900, hence:

Total ratio: 5+7+9=21

(9/21) * x = 3300

* 7 ((9/21) * x = 3300) * 7

3x = 23100

x = $7700

The sum of the money that was  between the three friends was $7700.

c

step-by-step explanation:

i think because what else can be a sample of every member

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,