I’m not sure what i’m doing wrong the answer i get is not an option

So a property of parallelograms is that consecutive angles are supplementary, or add up to 180. Using this information, this is our equation:

Firstly, combine like terms:

Next, subtract 45 on both sides of the equation:

Lastly, divide both sides by 15 and your answer is x = 9, or D.

the correct answer is a.) bc< mn 5 stars if this you : )

step-by-step explanation:

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