Find the number of scarfs of length half metre that can be made from y metres of cloth

2Y is the  number of scarfs of length half metre that can be made from Y metres of cloth.

Step-by-step explanation:

To find the number of scarfs of length half metre that can be made from Y metre of cloth.

As per the given condition:

we have:

then;

Number of scarfs that can be made from Y metre of cloth =

Therefore, number of scarfs of length half metre that can be made from Y metres of cloth is, 2Y

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

c.

step-by-step explanation:

she should of added 9^2 and 12^2. that is because it is a^2+b^2=c^2. c^2 is the hypotenuse and should always be bigger than the other two numbers. which is why she should of added 9 squared and 12 squared together instead of 15 squared.