Answer:
21
Step-by-step explanation:
Answer:
Angles X and Z are supplementary, so 180-105. The answer is 75
Answer:
135
Step-by-step explanation:
Two supplement angles add up to equal 180 degrees.
So, (45+x=180)
180-45=x
135=x
Answer:
C??...
Step-by-step explanation:
Answer:

Step-by-step explanation:
We would multiply the fraction by its conjugate
( A conjugate is a expression that has the same integer or number values but have different signs) for example

and

ARE Conjugates.
The conjugate of

is

So this means we will multiply the expression by 1 plus sqr root of 5 on the numerator and denominator.
Our new numerator will be

We can apply the difference of squares for the denominator.

So our denominator will be

So our rationalized fraction will be
