$\dfrac{\frac{1}{x}-\frac{1}{y}}{\frac{1}{x}+\frac{1}{y}}=\dfrac{\frac{y}{xy}-\frac{x}{xy}}{\frac{y}{xy}+\frac{x}{xy}}=\dfrac{\frac{y-x}{xy}}{\frac{y+x}{xy}}=\dfrac{(y-x)xy}{(y+x)xy}=\dfrac{y-x}{y+x}$

Answer D.

6 0

3 years ago

12xy-44y+5 determine if it is prime or factorable

Elza [17]

PrimeAnswer:

Step-by-step explanation:

8 0

3 years ago

(a) Tom says that 1/5 + 7/20 = 8/25

mezya [45]

numerator = top part of the fraction

denominator = bottom part of the fraction

* means multiply

you can only add the numerator when the denominator is the same

cant add the denominator

denominator has to be the same

1/5 = 4/20

4/20 + 7/20 = 11/20

1 7/8 = 15/8

3/4 ÷ 15/8 =

3/4 * 8/15 =

24/60 = divide both top and bottom by 12 =

2/5

7 0

3 years ago

Read 2 more answers

Tucker was asked to solve the equation 5x + 3 = 6x + 1. He did not know if his first step should be to add 5 negative x-tiles, o

Fittoniya [83]

It does not matter which he does first. Either way, zero pairs will be created on both sides, which will isolate the variable to determine x. Adding the x-tiles and then the unit tile, or visa versa, will give the same solution.

4 0

3 years ago

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Standard __ covers real property appraisal development, and standard __ covers real property appraisal reporting.

Standard covers real property appraisal development, and standard covers real property appraisal reporting.