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Mathematics

2 answers:

Ksju [112]4 years ago

8 0

Answer:

32m^2

Step-by-step explanation:

Roman55 [17]4 years ago

4 0

I’m pretty sure it’s a

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Joey Chestnut is trying to break his own world record for eating the most hot dogs and buns in 10 minutes. He needs to eat more

mr Goodwill [35]

73 (because you want more than 72 to break the record) - 10 = 63
63/9 ( the amount of minutes left) = 7

Joey would have to eat at least 7 hot dogs each minute to break his record.

x+10 > 72

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3 years ago

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Jessica purchased a DVD that was on sale for 12% off. The sales tax in her county is 3%. Let y represent the original price of t

aleksandr82 [10.1K]

Answer:

If u add the number it will show u te answer which is 7

Step-by-step explanation:

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3 years ago

O.405 as a fraction

NikAS [45]

Answer:

$\frac{405}{1000 }$

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3 years ago

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Check down the image that’s give below

gregori [183]

Solution:

$\frac{3x}{ {x}^{2} + 6x + 9} + \frac{x + 3}{ {x}^{2} - 9 }$

In the first fraction, we have to factorise the denominator using (a + b)² = a² + 2ab + b². And in the second fraction, we have to factorise the denominator using a² - b² = (a - b)(a + b) identity.

$= \frac{3x}{ {(x)}^{2} + 2(x)(3) + ( {3)}^{2} } + \frac{x + 3}{(x)^{2} - (3)^{2} } \\ = \frac{3x}{(x + 3) ^{2} } + \frac{x + 3}{(x + 3)(x - 3)}$

From the second fraction, cancel out from both sides (x + 3), the we get:

$= \frac{3x}{(x + 3) ^{2} } + \frac{1}{(x - 3)} \\ = \frac{3x(x - 3) + 1(x + 3) ^{2} }{(x + 3)^{2} (x - 3)} \\ = \frac{3x ^{2} - 9 x+ {x}^{2} + 6x + 9}{ {(x + 3)}^{2} (x - 3)} \\ = \frac{ {4x}^{2} - 3x + 9}{(x + 3)(x + 3)(x - 3)}$