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3 years ago

$30.50 - $17.79= what Solve this problem in two diffrent ways (5th grade math)

Mathematics

2 answers:

Ksivusya [100]3 years ago

6 0

Answer: answer is 12.71

Step-by-step explanation:

I just did it like normal math subtraction with out dots an them at the end i putted dots and got answer easy-peasy

puteri [66]3 years ago

4 0

$30.50-$17.79 is $12.71. I hope that helps you :)

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2 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

First, calculate the area (A) of 1 rectangle

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

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

$A =9y^2 - 4$

Express as difference of two squares

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

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$A = Length * Width$

So, by comparison:

$Length = 3y - 2$

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The perimeter is:

$Perimeter = 2 *(Length + Width)$

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

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

$Perimeter = 2 *(6y)$

$Perimeter = 12y$

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2 years ago

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3 years ago

How do I find slope?

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Answer:

thw

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2 years ago

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