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3 years ago

What is the equivalent expression to 9+(5+3). Help

Mathematics

1 answer:

Gelneren [198K]3 years ago

3 0

9+(5+3) is going to be 17

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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

2 years ago

I need help for this to pass my last math class please help and show your work

Maksim231197 [3]

-12 + 3x + 2 = 5x - 10 - 8x
-10 + 3x = -3x -10
-10 + 6x = -10
6x = 0
x = 0

3 0

3 years ago

PLZ HELP!!!!!!35. ABCD is an isosceles trapezoid with A(0,-1), B(-2,3) and C(6,-1). Find the coordinates of C.

sashaice [31]

Answer:

wouldnt it be (6,-1)...

Step-by-step explanation:

because those are the cords your said c was at

6 0

2 years ago

ANSWER HELP SHOW WORK 15 POINTS

azamat

Answer:

m<-2

Step-by-step explanation:

-4m-3.65>4.35

-4m>4.35+3.65

-4m>8

4m<-8 (the greater than or less than sign flips when you multiply or divide by the - sign)

m<-2 (divide both sides by 4)

7 0

2 years ago

Hey dogzine could you help me what is 2x9x3x45

tekilochka [14]

2430
2*9 = 19
18*3 = 54
54*45 = 2430

7 0

2 years ago

Read 2 more answers