Answer: you have to divide each side by 8, not 4. If you divide by 4, you get 2x = 1
The correct answer would be 1/2
Answer= 54 kilometers per hour is the answer
Rate of change is Rise over run=3/36=1/12 inches
Let the cost of one sheep and one cow be x and y respectively.
Therefore,
5x+5y=129
10x+17y =177
Solving the two equations,
Multiply the first equation by 2 and subtract the second from the results;
10x+10y = 258
10x+17y = 177
0x-7y = 81 => y= $-11.57 (cannot be a negative value). The details of the question need to be checked.
Now,
5x+5y = 129 => 5x-57.86 =129=>5x = 186.86 => x= $37.37
