Question

Given that m=8-5/r

1.make r the subject of the relation
2.find the value of r when s=7m=2 and 3=3​

Answer 1

Step-by-step explanation:

Given that,

`m=8-(5)/(r)`

(1) We need to find the value of r.

Subtract 8 from both sides,

`m-8=8-8-(5)/(r)\\\\m-8=-(5)/(r)\\\\r(m-8)=-5\\\\r=(-5)/((m-8))`

So, the value of r is equal to
`(-5)/((m-8))`.

(2) Put m=2 in the value of r. So,

`r=(-5)/((2-8))\\\\r=(5)/(6)`

Hence, this is the required solution.