What is the value of y in the equation 6.4x + 2.8y = 44.4, when x = 3?

As we are given with

Now to find the value of x we will substitute the value of x in the above equation, we get

6.4x+2.8y=44.4

x=3

So, Let us plug x=3 in the equation

6.4(3) +2.8y=44.4

So, when we plug 3 in the equation.

6.4 is multiplied with 3

So, 6.4*3+2.8y=44.4

19.2+2.8y=44.4

Subtracting 19.2 from both sides of '='

19.2-19.2+2.8y=44.4-19.2

0+2.8y=25.2

2.8y=25.2

Divide by 2.8 on both sides to get y by itself

y=

y=9

For x=3 in 6.4x+2.8y=44.4, y is 3

Answer y=9

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8+10

step-by-step explanation:

you multiply 4 by 2 and 5 by 2