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2 years ago

4(10b-4) Explain please

Mathematics

2 answers:

katovenus [111]2 years ago

5 0

Answer:

40b - 16

Step-by-step explanation:

4 (10b - 4)

= (4*10b) - (4*4) [distributive property]

= 40b - 16

Hope it helps ⚜

Angelina_Jolie [31]2 years ago

4 0

<h3>Answer: 40b - 16</h3>

Work Shown:

4(10b-4)

4*10b - 4*4

40b - 16

I multiplied the outer term 4 by each term inside. Refer to the distribution property (aka distributive property).

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Answer:

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4 - 3 × 2/2 × 2 + 4 = 2/8
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[7] 5 - x²/3x²

5 - (- 4)²/3 × - 4² = 5 - 16/3 × 16
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we know that

If a ordered pair (x,y) is a solution of the equation, then the ordered pair must satisfy the equation

we have the equation

$7x-5y=28$

Let's verify all the cases to determine the solution to the problem.

case A) point $(-6,-14)$

Substitute the values of x and y in the equation

$x=-6\\y=-14$

$7(-6)-5(-14)=28$

$-42+70=28$

$28=28$ -------> is true

therefore

The point $(-6,-14)$ is a solution of the equation

case B) point $(-1,-7)$

Substitute the values of x and y in the equation

$x=-1\\y=-7$

$7(-1)-5(-7)=28$

$-7+35=28$

$28=28$ -------> is true

therefore

The point $(-1,-7)$ is a solution of the equation

case C) point $(4,10)$

Substitute the values of x and y in the equation

$x=4\\y=10$

$7(4)-5(10)=28$

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therefore

The point $(4,10)$ is not a solution of the equation

case D) point $(7,9)$

Substitute the values of x and y in the equation

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$7(7)-5(9)=28$

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$4=28$ -------> is not true

therefore

The point $(7,9)$ is not a solution of the equation

therefore

the answer is

$(-6,-14)$

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