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Igoryamba
3 years ago
13

Is 145% a rational or irrational number

Mathematics
2 answers:
Thepotemich [5.8K]3 years ago
7 0
It is rational because it is a percentage
Naya [18.7K]3 years ago
3 0

Answer: 145 is a rational number because it can be expressed as the quotient of two integers: 145 ÷ 1.

Step-by-step explanation:

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Let $f(x) = x^2 + 4x - 31$. for what value of $a$ is there exactly one real value of $x$ such that $f(x) = a$?
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To solve for this, we need to find for the value of x when the 1st derivative of the equation is equal to zero (or at the extrema point).

So what we have to do first is to derive the given equation:

f (x) = x^2 + 4 x – 31

 

Taking the first derivative f’ (x):

f’ (x) = 2 x + 4

 

Setting f’ (x) = 0 and find for x:

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x = - 2

 

Therefore the value of a is:

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Answer:

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Step-by-step explanation:

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