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LekaFEV [45]
3 years ago
8

(9x^4-3x^3+4x^2+5x+7) + (11x^4-4x^2-11x-9)

Mathematics
1 answer:
icang [17]3 years ago
5 0

Answer:

20x^4 - 3x^3 - 6x - 2

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It takes you 1 minute 40 seconds to walk 550 feet. What is your average speed?
erica [24]

Answer:

5.5 feet per second or 330 feet per minute

Step-by-step explanation:

550/100 seconds = 5.5 feet per second  

5.5 x 60 = 330 feet per minute

3 0
3 years ago
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I need help now I don't get this
Darina [25.2K]
The answer is $1.80.  You would take 25% of 3, which is 75, and subtract it from 3.  That leaves you with $2.25, which you take 20% off, which is 0.45, and subtract that from 2.25.  That leaves you with a grand total of $1.80.  Hope that this helped!
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3 years ago
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What is the wavelength of a 320 Hz sound traveling 330 m/s?
maw [93]

Answer:1.03125 meter

Step-by-step explanation:

Velocity =330 meter per second

Frequency =320 Hertz

wavelength=velocity ➗ frequency

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Wavelength=1.03125 meter

8 0
3 years ago
2:10:16 ratio simpification (I know the answer, but i need the working)
likoan [24]

Step-by-step explanation:

<em>2</em><em>:</em><em>1</em><em>0</em><em>:</em><em>1</em><em>6</em><em>=</em><em>2</em><em>/</em><em>1</em><em>0</em><em>=</em><em>1</em><em>/</em><em>5</em><em>÷</em><em>1</em><em>6</em>

<em>1 \div 5 \div 16</em>

<em>1</em><em>/</em><em>5</em><em>×</em><em>1</em><em>/</em><em>1</em><em>6</em>

<em>=</em><em>1</em><em>/</em><em>8</em><em>0</em>

5 0
2 years ago
PLEASE WILL GIVE BRAINLIEST!!
sveta [45]

Answer:

10.5

Step-by-step explanation:

because 10.5x2=21. and 45+13+21=79, 100-79= 21.

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3 years ago
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