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GuDViN [60]
3 years ago
5

What are the zeroes of the polynomial equation? f(x) = x^2+9x+20

Mathematics
2 answers:
vredina [299]3 years ago
7 0
Zeroes are when f(x)=0
0=x^2+9x+20
factor
0=(x+4)(x+5)
set each to zero
x+4=0
x=-4
x+5=0
x=-5

zeroes are f(-5) and f(-4)
Allushta [10]3 years ago
4 0
x^2+9x+20=0\\
x^2+4x+5x+20=0\\
x(x+4)+5(x+4)=0\\
(x+5)(x+4)=0\\
x=-5 \vee x=-4
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podryga [215]

Answer:

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Step-by-step explanation:

Total pencils = 30

Probability of picking a red = 1/6

Red pencils in the box = probability × total pencils

= 1/6 × 30

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So, there are 5 red pencils in the box.

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Step-by-step explanation:

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3 years ago
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tangare [24]

Answer:  After they've played 8 games, they will have the same amount of money remaining.

Step-by-step explanation:

Represent the number of games by the variable x and the remaining amount of money by the variable y.  

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Lisa's situation can be represented by the equation   y = 13 - 0.50x  

Now to find out how many games they will have the same amount of money remaining, you have to use substitution and solve for x.

15 - 0.75x = 13 - 0.50x

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3 years ago
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sineoko [7]

Answer:


Step-by-step explanation:

13. -2(4)= -8     14. 6(-5)= -30       15. 3(-5)(2)= -30

16. -12(4)= -48     17. -4(2)^2= -64      18. (-5)^2= -25

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Hope this helps!


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Answer:

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Step-by-step explanation:

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