Question

If rs = 23 - 2x st = 9x -5 and rt = 39 find rs

Answer 1

Answer:17

Explanation:

Answer 2

`rs=17\ units`

Explanation:

we know that

`rt=rs+st`

we have

`rt=39\ units`

`rs=(23-2x)\ units`

`st=(9x-5)\ units`

substitute the given values and solve for x

`39=(23-2x)+(9x-5)`

`39=(7x+18)`

`7x=39-18`

`7x=21`

`x=3`

Find the value of rs

substitute the value of x

`rs=23-2(3)=17\ units`