Which expression is equivalent to the following complex fraction? 1/x-1/y / 1/x+1/y a. y+x/y-x b. (y-x)(y+x)/ x^2 y^2 c. x^2 y^2/ (y+x) (y+x) d. y-x/y+x

(D)

Explanation:

Just a note on writing down these expressions: I recommend using parentheses whenever you can to avoid misinterpretation. An expression 1/x-1/y / 1/x+1/y could be interpreted by someone as 1/x-(1/y / 1/x)+1/y, which is a different thing.

the answer is 15% decrease

answer: 1722

step-by-step explanation:

given: the mass of saturn=

the mass of mercury=

the number of times the mass of saturn is greater than the mass of mercury

hence, the mass of saturn is 1722 times greater than the mass of mercury.