I’m in a test please help step by step

So, the value of C is 125 degrees.

You can figure it out using the Vertical Angles.

c=125

Step-by-step explanation:

the angle that 125 is equivalent to the angle above it, making c 125. if you were to add up all the angles, it would equal 360. 125 plus 125 is 250. the angles across from each other will always be the same. subtract 250 from 360, the answer is 110. then you would divide by two since there are two more angles. to recap, c equals 125, and the side angles equal 55

d. 8

step-by-step explanation:

the given radical expression is:

we can rewrite this as:

we express as square numbers to get;

the exponents will now cancel out to give.

the correct answer is d