3 years ago

Hello answer my question

Mathematics

1 answer:

Kay [80]3 years ago

5 0

Answer:

Hi. I don't know what your question is, but if you ask it, I'll try to answer it.

Step-by-step explanation:

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Calculate the side of a square whose perimeter is 36m<br>Show working<br>Step by step explanation

Pie

Answer:

One side is 9 m

Step-by-step explanation:

Perimeter = 36 m

Perimeter = 4a

a = P/4

a = 36/4

a = 9

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3 years ago

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Six times a number is 240 what is the number?

sweet-ann [11.9K]

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The difference between the cost of fish and the coast of meat is no less than 150

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3 years ago

5x3 + 14x2 + 9x <br> help

Cerrena [4.2K]

<h3>Answer: x(x+1)(5x+9) </h3>

===================================================

Work Shown:

5x^3 + 14x^2 + 9x

x( 5x^2 + 14x + 9 )

To factor 5x^2 + 14x + 9, we could use the AC method and guess and check our way to getting the correct result.

A better way in my opinion is to solve 5x^2 + 14x + 9 = 0 through the quadratic formula

$x = \frac{-b\pm\sqrt{b^2-4ac}}{2a}\\\\x = \frac{-(14)\pm\sqrt{(14)^2-4(5)(9)}}{2(5)}\\\\x = \frac{-14\pm\sqrt{16}}{10}\\\\x = \frac{-14\pm4}{10}\\\\x = \frac{-14+4}{10} \ \text{ or } \ x = \frac{-14-4}{10}\\\\x = \frac{-10}{10} \ \text{ or } \ x = \frac{-18}{10}\\\\x = -1 \ \text{ or } \ x = \frac{-9}{5}\\\\$

Then use those two solutions to find the factorization

x = -1 or x = -9/5

x+1 = 0 or 5x = -9

x+1 = 0 or 5x+9 = 0

(x+1)(5x+9) = 0

So we have shown that 5x^2 + 14x + 9 factors to (x+1)(5x+9)

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Overall,

5x^3 + 14x^2 + 9x

factors to

x(x+1)(5x+9)

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3 years ago