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Lilit [14]
3 years ago
8

How would the sum of cubes formula be used to factor x3y3 + 343? Explain the process. Do not write the factorization.

Mathematics
2 answers:
Triss [41]3 years ago
4 0
The sum of cubes formula:
a³ + b³ = ( a + b ) ( a² - a b + b² )
x³ y³ = ( x y )³ and 343 = 7³
x³ y³ + 343 = ( x y )³ + 7³ = ( x y + 7 ) ( x² y² - 7 x y + 49 )
olga_2 [115]3 years ago
3 0

To factor, first identify the quantities that are being cubed. The first term is the cube of xy, and the constant is the cube of 7. Next, use the formula to write the factors. The first factor is the sum of xy and 7. The second factor has three terms: the square of xy, the negative of 7xy, and the square of 7.

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Find an angle between 0 degrees and 360 degrees that is coterminal with 950 degrees
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Answer:

40 degrees

Step-by-step explanation:

(to find coterminal angles to a given angle, we add 360 degrees to the given angle or subject 360 degrees from the given angle any angle any number of time).

-1400 degrees is negative angl, so to get the coterminal angle between 0 degrees and 360 degrees ( the smallest positive coterminal angle), we must add multiples of 360 degrees until we get a possitive coterminal angle:

-1400 degrees+(360 degrees*4)

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so the answer is 40 degrees

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3 years ago
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Ad libitum [116K]

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7 0
2 years ago
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<span>6x=8y+10

Well you must first get your equation set up into the form called "Slope intercept." 
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8y + 6x = 10
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8y = 6x + 10
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-Gives you a thumbs up-



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3 years ago
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