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2 years ago

12

What’s 40% of $600 ?

2 answers:

Mandarinka [93]2 years ago

8 0

Answer:

$240

Step-by-step explanation:

nignag [31]2 years ago

5 0

Answer:

Step-by-step explanation:

Discount = Original Price x Discount %/100

Discount = 600 × 40/100

Discount = 600 x 0.4

You save = $240.00

Final Price = Original Price - Discount

Final Price = 600 - 240

Final Price = $360.00

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2 years ago

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3 years ago

The combined area of a pair of congruent rectangles can be represented, in square units, by the expression 18y^2-818y 2 −8. The

sveta [45]

Answer:

$Perimeter = 12y$

Step-by-step explanation:

Given

$Area = 18y^2 - 8$ -- two rectangles

Required

Determine the perimeter of one of the rectangles

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$A =\frac{1}{2}Area$

$A =\frac{1}{2}(18y^2 - 8)$

$A =9y^2 - 4$

Express as difference of two squares

$A =(3y - 2)(3y+2)$

Area is calculated as:

$A = Length * Width$

So, by comparison:

$Length = 3y - 2$

$Width = 3y + 2$

The perimeter is:

$Perimeter = 2 *(Length + Width)$

$Perimeter = 2 *(3y-2+3y+2)$

Collect Like Terms

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8 0

2 years ago