What is the value of x in the equation 4x+8y=40, when y=0.8 ?

The value of x is 8.4

Step-by-step explanation:

The given equation is:

4x+8y=40

where y = 0.8 = 8/10

Put the value of y in the given equation:

4x+8(0.8)=40

4x+6.4 = 40

Combine the like terms:

We get,

4x=40-6.4

4x= 33.6

Now divide both sides by 4

4x/4 = 33.6/4

x=8.4

Thus the value of x is 8.4

Step-by-step explanation:

You have the following equation:

 In order to find the value of the variable "x" when , you need to substitute this value of "y" into the given equation and then you must solve for  "x".

Applying this procedure, you get the following value of "x":

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5