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Verdich [7]
3 years ago
14

Victoria was given the expression 5x - 4x^2-1+X-8x^2+7 and asked to

Mathematics
2 answers:
Nadya [2.5K]3 years ago
7 0

Answer:  -6(2x+1)(x-1)

Step-by-step explanation:

Given the expression in the form 5x-4x^2-1+x-8x^2+7, we know that Victoria can simplify it by adding the like terms:

-12x^2+6x+6

She can also factor out -6:

-6(2x^2-x-1)

Now, she needs  to factor the coefficient of the second term rewrite it as (1-2), then:

-6(2x^2+(1-2)x-1)

-6(2x^2-2x+x-1)

Now she needs to group the terms as following:

-6[(2x^2-2x)+(x-1)]

And factor out 2x:

-6[2x(x-1)+(x-1)]

Finally, she has to factor out (x-1). Therefore, she gets:

-6(2x+1)(x-1)

vfiekz [6]3 years ago
3 0

Answer:

-12x^2+6x+6

this is the answer for ap ex

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Find the percent of increase to the nearest whole from 12 to 20
ankoles [38]

Answer:

The answer is

<h2>67\%</h2>

Step-by-step explanation:

To find the percentage increase we use the formula

<h3>Percentage \:   change =  \frac{change}{original \:  \: quantity}  \times 100\%</h3>

From the question

The original value = 12

To find the change we subtract the smaller value from the larger one

That's

Change = 20 - 12 = 8

So the percentage increase is

<h3>\frac{8}{12}  \times 100 \%\\  =  \frac{2}{3}  \times 100\% \\  = 66.67\%</h3>

We have the final answer as

67\% to the nearest whole number

Hope this helps you

3 0
3 years ago
Help me with this math for 50 points
Lady_Fox [76]

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HELP
mr Goodwill [35]

Answer:

b should be the answer i think

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At the local pet store, zebra fish cost $1.80 each and neon tetras cost $2.10 each. If Ernesto bought 16 fish for a total cost o
madreJ [45]
<span>zebra fish a then tetras fish (11 – a)
2.2a + 1.85(11 – a) = 22.80
2.2a + 20.35 – 1.85a = 22.80
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3 years ago
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boyakko [2]

Answer: Jaleel´s method is correct and the right option is option number D

Step-by-step explanation:

its because 2(x-2)

= 2x-4

note 2 is multiplied with both x and -2!

4 0
3 years ago
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