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3 years ago

Solve by completing the square:X^2+6x-12=0

1 answer:

5 0

X² + 6x -12 = 0
x = -(6) +/- √((6)² - 4(1)(-12))
 2(1)
x = -6 +/- √(36 + 48)
 2
x = -6 +/- √(84)
 2
x = -6 +/- 2√(21)
 2
x = -3 + √(21)
x = -3 + √(21) x = -3 - √(21)

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A seed company planted a floral mosaic of a national flag. The perimeter of the flag is 2,360 ft Determine the flag's width and

just olya [345]

The length of rectangular mosaic flag is 710 feet and width is 470 feet

Step-by-step explanation:

Let l be the length of the flag

and

w be the width

Then according to given statement

l = w+240

Perimeter = 2360 feet

The formula for perimeter is given by:

$Perimeter = 2(Length+Width)$

Putting values

$2360 = 2[w+240+w]\\\frac{2360}{2} = \frac{2[w+240+w]}{2}\\1180 = 2w+240\\1180-240 = 2w+240-240\\940 = 2w$

Dividing both sides by 2

$\frac{2w}{2} = \frac{940}{2}\\w = 470$

The width is 470 feet

Now,

$l = w+240\\= 470+240\\=710$

Hence,

The length of rectangular mosaic flag is 710 feet and width is 470 feet

Keywords: Perimeter, dimensions

Learn more about perimeter at:

#LearnwithBrainly

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3 years ago

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Vlad [161]

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Step-by-step explanation:

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3 years ago

Use the complex conjugate to find the absolute value of 8+12i

Anastaziya [24]

Answer:

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Step-by-step explanation:

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KatRina [158]

Answer:

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Step-by-step explanation:

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3 years ago