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GarryVolchara [31]
3 years ago
5

-(2x+12) (9x^2+4x-9) please show all work!

Mathematics
1 answer:
Bess [88]3 years ago
5 0

Answer:

108 - 30x - 116x² - 18x³

Step-by-step explanation:

We have to get the value of - (2x + 12) (9x² + 4x - 9)

Now, using the distributive property of multiplication we get

- (2x + 12) (9x² + 4x - 9)

= -[2x (9x² + 4x - 9) + 12 (9x² + 4x - 9)]

= -[(18x³ + 8x² - 18x) + (108x² + 48x - 108)]

= -[18x³ + 116x² + 30x - 108]

= 108 - 30x - 116x² - 18x³ (Answer)

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Based on the calculations, the depth of tent is equal to 12 feet.

<h3>How to calculate the depth of the tent?</h3>

Based on the diagram (see attachment) and information provided, we can logically deduce the following parameters (points):

  • Triangle ABC is an isosceles triangle (AB = AC).
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Next, we would determine the height of the right-angled triangle (ADC) by applying Pythagorean theorem:

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Read more on area of triangle here: brainly.com/question/21917592

#SPJ1

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