Question

Determine the product of 3 and (5/4n + 1.8)

Answer 1

`3*( (5)/(4n) +1,8) = ?`


`3*( (5)/(\diagup\!\!\!\!\!4n)+ (7,2n)/(\diagup\!\!\!\!\!4n) ) =`

`3*(5+7,2n) =`

`15 + 21,6n =`

`21,6n = - 15`

`n = (-15)/(21,6)`

`n \approx 0.69`


Determine the product of
`3*( (5)/(4n) +1,8) = ?`


`3*( (5)/(4*(0,69)) +1,8)`

`3*( (5)/(2,76) +1,8) =`

`3*( \approx1,8 +1,8) =`

`3*( 3,6) = \boxed{10,8}`

Answer:

`\boxed{10,8}`

Answer 2

`3.75n+5.4`

Step-by-step explanation:

We are asked to find the product of 3 and
`((5)/(4)n+1.8`.

First of all, we will write our given problem as multiplication problem.

`3*((5)/(4)n+1.8)`

We will use distributive property
`a(b+c)=a\cdot b+a\cdot c` to solve our given problem.

`3\cdot (5)/(4)n+3\cdot 1.8`

`(15)/(4)n+5.4`

`3.75n+5.4`

Therefore, the product of our given problem would be
`3.75n+5.4`.