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8_murik_8 [283]
3 years ago
15

Please help me I would really appreciat it

Mathematics
2 answers:
Bingel [31]3 years ago
7 0
Easy. Just add a 0 on the end of the numerator and denomenator.
spin [16.1K]3 years ago
3 0
1. 6/20 2. 5/11
Hope it helps

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Determine whether the equation x^3 - 3x + 8 = 0 has any real root in the interval [0, 1]. Justify your answer.
nikdorinn [45]

Answer:

The equation does not have a real root in the interval \rm [0,1]

Step-by-step explanation:

We can make use of the intermediate value theorem.

The theorem states that if f is a continuous function whose domain is the interval [a, b], then it takes on any value between f(a) and f(b) at some point within the interval. There are two corollaries:

  1. If a continuous function has values of opposite sign inside an interval, then it has a root in that interval. This is also known as Bolzano's theorem.
  2. The image of a continuous function over an interval is itself an interval.

Of course, in our case, we will make use of the first one.

First, we need to proof that our function is continues in \rm [0,1], which it is since every polynomial is a continuous function on the entire line of real numbers. Then, we can apply the first corollary to the interval \rm [0,1], which means to evaluate the equation in 0 and 1:

f(x)=x^3-3x+8\\f(0)=8\\f(1)=6

Since both values have the same sign, positive in this case, we can say that by virtue of the first corollary of the intermediate value theorem the equation does not have a real root in the interval \rm [0,1]. I attached a plot of the equation in the interval \rm [-2,2] where you can clearly observe how the graph does not cross the x-axis in the interval.  

6 0
2 years ago
There are 4 cats in a street,Five more come . How many cats are in a street ?
stealth61 [152]

Answer:

9, but suddenly 2 of them get separate, 3 of them trempled by people and 4 others get kidnapped so, didn't have any cat in a street

6 0
3 years ago
Read 2 more answers
Micheal paid for 2.5 pounds of plums with a ten-dollar bill. He received 1.20 in change from the cashier.What was the price,per
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Answe

Step-by-step explanation:

8 0
3 years ago
Y=x+5<br> y=-2x-4<br> use substitution
blondinia [14]
You have to do Y= -2+5-4
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PilotLPTM [1.2K]
Hello!!

I believe the correct answer to your question is capuchon. These are cone shaped ceremonial hats worn durning Mardi Gras.

Hope I helped with a detailed description. Have a nice night!
~Brooke❤️
3 0
3 years ago
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