3 years ago

What number makes the equation true? Enter the answer in the box, 9-184

Mathematics

2 answers:

tensa zangetsu [6.8K]3 years ago

7 0

Answer:

9=18÷2

Step-by-step explanation:

because 18÷2=9 youre just reversing it

Marizza181 [45]3 years ago

6 0

Answer:

9=18 divided by 2

Step-by-step explanation:

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Divide 3x2 – 11x – 4 by x – 4.

Andreyy89

Answer:

The answer is $(3x+1)$

Step-by-step explanation:

we have

$\frac{3x^{2}-11x-4}{x-4}$

Convert the numerator in factored form

$3x^{2}-11x-4=0$

Group terms that contain the same variable, and move the constant to the opposite side of the equation

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Factor the leading coefficient

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Complete the square. Remember to balance the equation by adding the same constants to each side.

$3(x^{2}-11x/3+(121/36))=4+(121/12)$

$3(x^{2}-11x/3+(121/36))=(169/12)$

$(x^{2}-11x/3+(121/36))=(169/36)$

Rewrite as perfect squares

$(x-(11/6))^{2}=(169/36)$

Square root both sides

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$x=\frac{11}{6}(+/-)\frac{13}{6}$

$x=\frac{11}{6}+\frac{13}{6}=4$

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therefore

$3x^{2}-11x-4=3(x-4)(x+\frac{1}{3})=(x-4)(3x+1)$

Substitute

$\frac{3x^{2}-11x-4}{x-4}=\frac{(x-4)(3x+1)}{x-4}=(3x+1)$

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