8 would be the length of each piece of wire I think.
To find the answer ,multiply 2 1/2 by 2/5
(2/5)*(2 1/2)=1
Therefore you should use 1 cup of flour.
earrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
p*x+57-(-75*x+q)=0
In this type of equations, having more than one variable (unknown), you have to specify for which variable you want the equation solved.
Unless there is none then in that case there very well may be infinite solutions
Answer: m perpendicular = - 1/4
For number 5. X=12.5 and for number 6. X=4
Hope this helps :)