Mathematics: 9x^2 + 24x + 20 = 4 solve this by factoring. you!

9x^2 + 24x + 20 = 4 solve this by factoring. you!

Ответ:

trin520

11.03.2022

Mathematics

Note that,

$9x^2+24x+20=4\Longrightarrow9x^2+24x+16$

Which factors to,

$(3x+4)^2=0\Longrightarrow3x+4=0$

And simplifies to solution C,

$\boxed{x=-\dfrac{4}{3}}$

Hope this helps.

Any additional questions please feel free to ask.

r3t40

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Ответ:

KadaLearns

11.03.2022

Mathematics

$\large\boxed{C.\ x=-\dfrac{4}{3}}$

Step-by-step explanation:

$9x^2+24x+20=4\qquad\text{subtract 4 from both sides}\\\\9x^2+12x+12x+16=0\\\\3x(3x+4)+4(3x+4)=0\\\\(3x+4)(3x+4)=0\\\\(3x+4)^2=0\iff3x+4=0\qquad\text{subtract 4 from both sides}\\\\3x=-4\qquad\text{divide both sides by 3}\\\\x=-\dfrac{4}{3}$

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Ответ:

fredbear373

12.11.2022

Mathematics

There are 50388 ways to choose.

Step-by-step explanation:

Since we have given that

Number of vegetables = 8

Number of fruits = 6

Number of cheeses = 6

Number of whole grain breads = 7

Number of items he buys = 15

We need to find the number of ways he wants all 8 vegetables.

So, it becomes,

$^8C_8\times ^{19}C_7\\\\=1\times 50388\\\\=50388$

Hence, there are 50388 ways to choose.

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9x^2 + 24x + 20 = 4
solve this by factoring.
you!

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