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4 years ago

Which of the following is a root of the polynomial shown below f(x)=x^3+2x^2-x-2

Mathematics

2 answers:

nevsk [136]4 years ago

6 0

Answer:

Roots: -1, 1, -2

Step-by-step explanation:

Aleks [24]4 years ago

3 0

F(x) = x^3 + 2x^2 - x - 2
f(x) = x^2(x + 2) - (x + 2) 
f(x) = (x^2 - 1)(x + 2) 
f(x) = (x + 1)(x - 1)(x + 2) 
Roots: -1, 1, -2

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The maintenance department at the main campus of a large state university receives daily requests to replace fluorescent light b

oksano4ka [1.4K]

Answer: 34%

Step-by-step explanation:

Given : The distribution of the number of daily requests is bell-shaped and has a $\mu=35$ and $\sigma=6$ .

We can see that 41 = 35+6 , it 41 is one standard deviation from mean in the right side . (1)

According to the 68-95-99.7% rule, 68% of the population falls within 1 standard deviation from the mean.

34% (half of 68%) of the population on right side and 34% population on the left side of the density curve. (2)

From (1) and (2), the approximate percentage of light bulb replacement requests numbering between 35 and 41= 34%

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3 years ago

Convert 142 base four to base ten

liraira [26]

$142_4=1\times4^2+4\times4^1+2\times4^0=16+16+2=34_{10}$

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4 years ago

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stealth61 [152]

Answer:

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A=1/2(2)(4)

A=1/2(8)

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Step-by-step explanation:

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3 years ago

Anybody know the answer?

Marta_Voda [28]

Use the Pythagorean theorem:

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4 years ago

Read 2 more answers

Simplify the expression 2(x - 5)

timofeeve [1]

Answer:

brainliest plsss

Step-by-step explanation:

2(x−5)

=(2)(x+−5)

=(2)(x)+(2)(−5)

=2x−10

7 0

3 years ago