Option D:
is equivalent to the given expression.
Solution:
Given expression:

To find which expression is equivalent to the given expression.

Using exponent rule: 

Using exponent rule: 


Using exponent rule: 


Divide both numerator and denominator by the common factor 5.


Therefore,
is equivalent to the given expression.
Hence Option D is the correct answer.
Answer:
63/70 is simplified to 9/10 in fraction form and 0.9 in decimal form.
14/30 is simplified to 7/15 in fraction form and 0.46 in decimal form.
24/36 is simplified to 2/3 in fraction form and 0.6 in decimal form.
10/50 is simplified to 1/5 in fraction form and 0.2 in decimal form.
40/56 is simplified to 5/7 in fraction form and 0.714285 in decimal form.
18/24 is simplified to 3/4 in fraction form and 0.75 in decimal form.
You can simplify these and future questions by cancelling out the numerator's and denominator's LCF (Least Common Factor). I hope this helps!
It is a 30,60,90 triangle, so x = 4, and y = 2