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3 years ago

Let the polynomials A = 7x² + 3xy and B = -3xy .

Mathematics

1 answer:

bija089 [108]3 years ago

7 0

Answer:

– 21x^3 y – 9x^2 y^2 e) is your answer

Step-by-step explanation:

Solve the following system for A and B:

{A = 7 x^2 + 3 x y

B = -3 x y

Express the system in matrix form:

(1 | 0

0 | 1)(A

B) = (7 x^2 + 3 x y

-3 x y)

Write the system in augmented matrix form and use Gaussian elimination:

(1 | 0 | 7 x^2 + 3 x y

0 | 1 | -3 x y)

Collect results:

Answer: {A = 7 x^2 + 3 x y , B = -3 x y

then we multiply the results (7 x^2 + 3 x y) ( -3 x y) = – 21x^3 y – 9x^2 y^2

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3 years ago

On his last history test, Marty only missed one question. He received -3 points for that question. His friend Julie forgot to st

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4 years ago

The Keller family's dinner bill is $55.35. This includes an 8% meal tax and a 15% tip on original meal for the server

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3 years ago

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MatroZZZ [7]

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3 years ago

I need help with all three questions please. I am just Stuck.

vitfil [10]

Answer:

$p_{o} = 6$ , $r = 2$ , $p_{12} = 24576$ .

Step-by-step explanation:

The value of $p_{o}$ is the first value of the geometric series, that is, $p_{o} = 6$ .

If the series represents a geometric sequence, then $r$ must be constant for every consecutive pair of elements, that is:

$r_{1} = \frac{p_{1}}{p_{o}} = \frac{12}{6} = 2$

$r_{2} = \frac{p_{2}}{p_{1}} = \frac{24}{12} = 2$

$r_{3} = \frac{p_{3}}{p_{2}} = \frac{48}{24} = 2$

Since $r_{1} = r_{2} = r_{3} = 2$ , $r = 2$ .

The geometric sequence can be represented by the following formula:

$p_{n} = p_{o}\cdot r^{n}$ , for $n \in \mathbb{N}$

The 12th element of the geometric sequence is: ( $p_{o} = 6$ , $r = 2$ , $n = 12$ )

$p_{12} = 6\cdot 2^{12}$

$p_{12} = 24576$

5 0

3 years ago