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3 years ago

Write the name of this property 42+0 = 42

2 answers:

8 0

This is the Identity property of addition. anything+0=that same number
Since adding 0 to a number still makes it the same number, its "identity" is still the same, thus the name.

artcher [175]3 years ago

8 0

That is the identiy Property of additon

anthing times 0 is the same number

hope this helps :)

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20 points!!

ANEK [815]

See below for the proof of the equation $\frac{ax + by}{x + y} - \frac{ax - by}{x - y}= 2(a - b)$

<h3>How to prove the equation?</h3>

The equation is given as:

$\frac{ax + by}{x + y} - \frac{ax - by}{x - y}= 2(a - b)$

Take the LCM

$\frac{(ax + by)(x - y) -(ax - by)(x + y)}{(x + y)(x - y)}= 2(a - b)$

Expand

$\frac{ax^2 - axy + bxy - by^2 -ax^2 - axy + bxy + by^2}{(x + y)(x - y)}= 2(a - b)$

Evaluate the like terms

$\frac{-2axy + 2bxy }{(x + y)(x - y)}= 2(a - b)$

Rewrite as:

$\frac{-2axy + 2bxy }{x^2 - y^2}= 2(a - b)$

Factorize the numerator

$\frac{2(a - b)(x^2 - y^2)}{x^2 - y^2}= 2(a - b)$

Divide

2(a - b)= 2(a - b)

Both sides are equal

Hence, the equation $\frac{ax + by}{x + y} - \frac{ax - by}{x - y}= 2(a - b)$ has been proved

Read more about equations at:

brainly.com/question/2972832

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5 0

1 year ago

A map is drawn so that every 1 inch on the map represents 50 actual miles. The table below can be used to record the actual dist

olasank [31]

200 miles
You just multiply 50 by 4.

:) have a good day !

7 0

2 years ago

What’s the solution of 2 plus 2

egoroff_w [7]

Answer: 4

Step-by-step explanation: 2 + 2 = 4

8 0

2 years ago

Read 2 more answers

Solve for Q<br> Q/B + A = Y

Otrada [13]

What are the numbers that are supposed to be plugged in?

6 0

2 years ago

Find the number 17% of which is 27 more than 14% of it.

Kay [80]

The original number would be 900

5 0

2 years ago