Answer: c) 2x² - 2x + 4
Step-by-step explanation:
We can simplify this equation and find the value of k.
k ÷ 2 + 1 - 1k = -2k
k ÷ 2 + 1 = -k
k + 1 = -2k
1 = -3k
k = -1/3
5.7 is 5 7/10 and it cannot be simplified
Step-by-step explanation:
Two legs of the right triangle are 6 and 9. We can find its third side as follows :

The above is called Pythagoras theorem and it is applicable for a right angled triangle.
a,b and c are base, perpendicular and hypotenuse respectively
c is the third side
So,

Hence, Cade and Tyce both are correct. The length of the missing side is 10.82