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lianna [129]
3 years ago
5

Find the zeros of the polynomial function f(x)=x^3-2x^2-8x

Mathematics
2 answers:
kotegsom [21]3 years ago
6 0
The roots are x=0,4,-2
KengaRu [80]3 years ago
5 0
First factor out that x
f(x)=x(x^2-2x-8)
what 2 numbers multiply to get -8 and add to get -2?
-4 and 2
f(x)=(x-0)(x-4)(x+2)
set to zero
x-0=0
x=0

x-4=0
x=4

x+2=0
x=-2

the zeroes are at x=-2,0 and 4
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Alex

The answer is C. 20.3 miles per hour.


In order to solve this, we have to first convert our time into hours. We start with 11 seconds, but need to convert to hours. Since there are 3600 seconds in an hour, we need to divide by that unit rate.


11 seconds/3600 = .00305 hours


Now we need to convert our meters into miles. The problem lets us know that there are 1609 meters in a mile, so we need to divide the 100 meters by 1609.


100 meters/1609 = .0621 miles.


Now to find miles per hour, we divide the miles we got by the hours.


.00305 miles/ .0621 miles = 20.3 miles per hour.

5 0
3 years ago
A number cube has 6 different faces, numbered 1 to 6. All faces have an equal probability of being rolled. What is the probabili
BARSIC [14]

Answer:

its a 1/6 chance

Step-by-step explanation:

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6 0
3 years ago
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vladimir2022 [97]

Answer:

2nd option

Step-by-step explanation:

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Hope I helped!

7 0
3 years ago
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Step-by-step explanation:

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3 years ago
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