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3 years ago

What is 12x3 – 9x2 – 4x + 3 in factored form?

Mathematics

2 answers:

stiks02 [169]3 years ago

6 0

This the factored formed for that problem (4x-3)(3x^2-1)

Svetach [21]3 years ago

5 0

Factor: 12x^3 - 9x^2 - 4x + 3

12x^3 - 9x^2 - 4x + 3
= (4x - 3)(3x^2 - 1)

Your answer is: (4x - 3)(3x^2 - 1)

Hope that helps!!!

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Choose all expressions that are equal to 0.75 x 0.5

aliya0001 [1]

The last three ones equal .375 which is the product of 0.75*0.5

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3 years ago

In a parenting magazine, Mrs. Smith read an advertisement about all the different ways that bleach can be used to kill bacteria.

babymother [125]

Question:

(a) How many bacteria would be found in 24 hours

(b) How many bacteria would be found in 2 days

Answer:

(a) 282429536481 bacteria

(b) $7.97*10^{22$ bacteria

Step-by-step explanation:

The question illustrates an exponential function

$y = ab^x$

Where

$a = Initial\ Value = 1$

$b=Rate = 3$ --- i.e. triples

$x = number\ of\ hours$

Solving (a): Bacteria in 24 hours

In this case:

$x = 24$

Substitute $x = 24$ , $b = 3$ and $a = 1$

So:

$y = ab^x$

$y = 1 * 3^{24$

$y = 1 * 282429536481$

$y = 282429536481$ bacteria

Solving (b): Bacteria in 2 days

$2\ days =48\ hours$

So:

$x = 48$

Substitute $x = 48$ , $b = 3$ and $a = 1$

So:

$y = ab^x$

$y = 1 * 3^{48$

$y =7.97*10^{22$ bacteria

Solving (c): How long for 1000 bacteria

In this case:

$y = 1000$

Substitute $y = 1000$ , $b = 3$ and $a = 1$

So:

$y = ab^x$

$1000 = 1 *3^x$

$1000 = 3^x$

Take Log of both sides

$Log1000 = Log3^x$

This gives:

$Log1000 = xLog3$

Make x the subject

$x = \frac{Log1000}{Log3}$

$x \approx 6$

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8 0

3 years ago

What is the solution to the following system of equations?

Paraphin [41]

Answer:

Option 2 ( 1,-10)

Step-by-step explanation:

The two equations are y = -x²-5x-4 -----(1)

and y = -x²+9x-18-------(2)

To get the solution of these lines we will substitute the value of y form equation 1 to 2.

- x² - 5x -4 = -x²+9x-18

Now by collecting similar terms on each side.

-x² -5x + x²-9x = -18 + 4

-14x = -14

14x = 14

x = 1

By putting the value of x in equation 1.

y = -1 - 5 - 4 = -10

So the solution is (1, -10)

Therefore Option 2 is the correct answer.

8 0

3 years ago

Read 2 more answers

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Natasha_Volkova [10]

______130,000_______

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4 years ago

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denis-greek [22]

Answer: The correct answer is A

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Given that positive numbers to represent deposits and negative numbers to represent withdrawals.

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