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nikdorinn [45]
3 years ago
11

Help me with this idk how

Mathematics
2 answers:
Anika [276]3 years ago
5 0
17) he rented the bike for six hours.

19) he either has 50 poster if you include the six
or 44
Elena L [17]3 years ago
4 0
17 - $49 - $19 = 30
        $30/ $5 per hour = 6 hours
 
Darryl rented the bike for 6 hours

18 - If there are 22 posters left, and half of them burned, so that means that originally there were double of 22 which is 44.
So he had 44 originally but bought 6 more and we have to double the six so that's 44 + 12 = 56

Adam had 56 posters to start with

Your answer is: Darryl- 6 hours; Adam- 56 posters 

Have an amazing day!

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KIM [24]

The correct answer is C.


You can tell this by factoring the equation to get the zeros. To start, pull out the greatest common factor.


f(x) = x^4 + x^3 - 2x^2


Since each term has at least x^2, we can factor it out.


f(x) = x^2(x^2 + x - 2)


Now we can factor the inside by looking for factors of the constant, which is 2, that add up to the coefficient of x. 2 and -1 both add up to 1 and multiply to -2. So, we place these two numbers in parenthesis with an x.


f(x) = x^2(x + 2)(x - 1)


Now we can also separate the x^2 into 2 x's.


f(x) = (x)(x)(x + 2)(x - 1)


To find the zeros, we need to set them all equal to 0


x = 0


x = 0


x + 2 = 0

x = -2


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Since there are two 0's, we know the graph just touches there. Since there are 1 of the other two numbers, we know that it crosses there.

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3 years ago
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