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nignag [31]
2 years ago
8

Pls help with the following:

itle="9x {}^{2} - 4 = 0" alt="9x {}^{2} - 4 = 0" align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
mario62 [17]2 years ago
7 0

Answer:

x = ± \frac{2}{3}

Step-by-step explanation:

9x² - 4 = 0 ( add 4 to both sides )

9x² = 4 ( divide both sides by 9 )

x² = \frac{4}{9} ( take the square root of both sides )

x = ± \sqrt{\frac{4}{9} } = ± \frac{\sqrt{4} }{\sqrt{9} } = ± \frac{2}{3}

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irakobra [83]

Answer:

Area of the parallelogram is 96 cm^{2}.

Step-by-step explanation:

A parallelogram is a quadrilateral with parallel and equal length of opposite sides. The diagonals are perpendicular to each other.

Area of a parallelogram is given as,

Area = base x height

Thus for the given parallelogram with base 12 cm and height 8 cm, the area would be;

Area = base x height

        = 12 x 8

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Area = 96 cm^{2}

The area of the parallelogram is 96 cm^{2}.

3 0
3 years ago
A movie theater sold 800 tickets and made $4400 in one night. If an adult ticket costs $8 and a children's ticket costs $4, how
zhenek [66]
Let x = adult tickets
Let y = children's tickets

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4 0
2 years ago
What is the value of a cube if the length of one side is 9 inches
sp2606 [1]

Answer:

729 in ^3

Step-by-step explanation:

3 0
3 years ago
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Answer:

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Step-by-step explanation:

Let, the length of the rectangle be 'L'

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length=2*Width+3

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Area of a rectangle = Length*Width

90=(2W+3)*W\\\\2W^2+3W=90\\\\2W^2+3W-90=0\\\\

Using Factorization Method to solve quadratic equation:

2W^2-12W+15W-90=0

Taking common from the equation:

2W(W-12)+15(W-12)=90\\\\(W-12)(2W+15)=0\\\\W-12=0\\\\W=12 feet

OR

2W+15=0\\\\2W=-15\\\\W=-7.5 feet

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Answer:

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Step-by-step explanation:

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