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3 years ago

Help math 3 and 5 please.

Mathematics

1 answer:

Aleks [24]3 years ago

8 0

That I 8 do you want to know how I got it from being the world best math slover

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Simplify 13x + 2y - 10x -7y

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Answer:

3x-5y

Step-by-step explanation:

Combine like terms

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3 years ago

PLS HELP!

irinina [24]

Answer:

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3 years ago

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alex41 [277]

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4 years ago

If i have 12 kg of trail mix and i ate 8,600 g how many liters would i have left?

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3 years ago

The area of a rectangle is 42 ft squared, and the length of the rectangle is 5 ft more than twice the width. Find the dimensions

stira [4]

Answer:

<h3>Length = 12 ft</h3>

Width = $\frac{7}{2} ft$

Step-by-step explanation:

Given,

Area of rectangle = $42 \: {ft}^{2}$

Width = X

Length = 2x + 5

Now,

$x(2x + 5) = 42$

$2 {x}^{2} + 5x = 42$

$2 {x}^{2} + 5x - 42 = 0$

$2 {x}^{2} + 12x - 7x - 42 = 0$

$2x(x + 6) - 7(x + 6) = 0$

$(2x - 7)(x + 6) = 0$

Either

$2x - 7 = 0$

$2x = 0 + 7$

$2x = 7$

$x = \frac{7}{2}$

Or,

$x + 6 = 0$

$x = 0 - 6$

$x = - 6$

Negative value can't be taken.

So, width = $\frac{7}{2} ft$

Again,

Finding the value of length,

Length = $2x + 5$

$2 \times \frac{7}{2} + 5$

$7 + 5$

$12$

Length = 12 ft

7 0

3 years ago

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