I believe the answer is 19 cm, because you compare 8cm to the other side, it's basically the same. Multiply 2 x 8 and you get 19 cm.
It's just like multiplying and dividing a negative, such as -1 *2=-2 and -2 / 1= -1
if there is one negative then it will be negative, so in this case it will be -7 / 2=
answer= -3 1/2
<span>(2y+8)/(16+4y)
2(y + 4)
= ---------------
4(y + 4)
= 1/2
answer
1/2</span>
1. 137.5%
2. 66.7%
3.48%
4.51.87
