Robert earned $10, which was 4 less thank twice what Eric made, How much mint did Eric earn?

$16

Step-by-step explanation:

First we would calculate twice of ten which is 20 then we subtract 4 from 20 which would be 16 and that is how you found your answer.

Hope this helps!! :)

answer: 1inch=7days  

12inch=12*7=84days

step-by-step explanation:

system of linear equation

step-by-step explanation:

as given in the data

a= 20 , b= -12

let us suppose that it is a straight line equation

now we know the formula for the system of linear equation

b= ma + c )

here m is slope of a straight line which is equal to formula

m=   (ii)

and here c is a constant

now putting the value of a and b in equation (ii)

m=

m=

putting the value of a,b and m in equation (i) gives us

-12 = + c

-12=-12 + c

adding 12 to both sides

-12 +12 = -12 +12 +c

0 =c

or c=0

as the value of the constant is zero which gives us that it is a linear equation and this order pair satisfies the system of linear equations.