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Lera25 [3.4K]
2 years ago
13

Need help ASAP. Last two problems on my study guide, can't seem to solve them?

Mathematics
1 answer:
NNADVOKAT [17]2 years ago
6 0

Answer:

9.)b=O or B=-1 or b=1

Step-by-step explanation:

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Balance the following equation: C2H4 + O2 → CO2 + H2O
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Hey mate hope its help you.......

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3 years ago
Which comparison is TRUE?
photoshop1234 [79]

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Your correct answer is D. 0.067 < ).61

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3 years ago
The length, width, and height of a rectangular box are represented by 2x, 3x + 1, and 5x - 6, respectively. When the volume is e
natali 33 [55]

Answer:

The coefficient of the 2nd term is - 26

Step-by-step explanation:

  • <em>Standard form of polynomial means its terms are ordered from greatest exponent to smallest exponent </em>
  • <em>The leading coefficient in polynomial is the coefficient of the first term in a polynomial in standard form</em>

∵ The length, width, and height of a rectangular box are

    represented by 2x, 3x + 1, and 5x - 6

∴ l = 2x , w = 3x + 1 , h = 5x - 6

The formula of the volume of a rectangular box is V = l × w × h

∵ V = 2x(3x + 1)(5x - 6)

- multiply the two brackets at first

∵ (3x + 1)(5x - 6) = (3x)(5x) + (3x)(-6) + (1)(5x) + (1)(-6)

∴ (3x + 1)(5x - 6) = 15x² + (-18x) + 5x + (-6)

- Add the like terms

∴ (3x + 1)(5x - 6) = 15x² + (-18x + 5x) + (-6)

∴ (3x + 1)(5x - 6) = 15x² + (-13x) + (-6)

- Remember (-)(+) = (-)

∴ (3x + 1)(5x - 6) = 15x² - 13x - 6

Substitute it in V

∴ V = 2x(15x² - 13x - 6)

- Multiply each term in the bracket by 2x

∴ V = 2x(15x²) - 2x(13x) - 2x(6)

∴ V = 30x³ - 26x² - 12x ⇒ in standard form

∵ The second term in the polynomial is - 26x²

∴ Its coefficient is - 26

∴ The coefficient of the 2nd term is - 26

3 0
3 years ago
Is 400​% of 5 less than​ 10, greater than 10 but less than​ 100, or greater than​ 100?
Kryger [21]

Answer:

400​% of 5 = 5 x 400/100 = 20.

20 > 10 and 20 < 100

Hope this helps!

:)

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3 years ago
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