Question

What is the value of x in the equation 4x + 8y - 40, when y-0.8?
4.6
0 8.4

Answer 1

8.4

Explanation:

the equation 4x+8y -40 can be written as 4x-8y-40=0, this represents a line in a space of two dimensions.

solving for x when y=0.8 we have the equation below>

`4x+8*0,8-40=0`

Which gives that x=42/5, or in more simpler terms, 8.4