I might be wrong but I did used to get 12.5 for the third one
It is C. It is not possible to fold the shape about a line so that the two halves fit exactly on to of one another.
The curtains will be 152 cm or 1.52 m.
There are 100 cm in a meter. Therefore, 1.6 meters is equal to 160 cm. If we subtract 8 from 160, we have 152 cm. We can also write it as 1.52 m.
So when you opened up the parenthesis on the right side of the question, you added -2 to 5 instead of multiplying. Since there is no addition sign in between -2 and the parenthesis, it should be multiplication, so -2x + -10.
So now the answer would be 10 = -10.
Which leads me to believe that this question wasn't written correctly because 10 does not equal -10 for sure.
The answer is b .........
