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Maslowich
3 years ago
5

Find all real numbers for which the rational expression is undefined. (Enter your answers as a comma-separated list. If no value

s make the expression undefined, enter NONE.) 6x-19/x2 - 81
Mathematics
1 answer:
Marianna [84]3 years ago
6 0

Answer: +9, -9

Step-by-step explanation: The rational expression in this case is undefined if the the denominator is equal to zero, which means that the x cannot be whatever makes the denominator zero, so:

x² - 81 = 0 ⇒ x² = 81 ⇒ x = +/- √81 ⇒ x = +/- 9

Note that we are using the equal sign just because this particular problem askes for a solutions that is undefined.

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Steve is rolling a six-sided number cube. what is the probability of the cube landing on a six?​
chubhunter [2.5K]

Answer:

1/6

Step-by-step explanation:

Space = {1,2,3,4,5,6}

n(S) = 6

A = Event of getting 6 = {6}

n(A) = 1

P(getting six) = n(a)/n(S) = 1/6

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3 years ago
Wath is the fraction 4over10 plus 3over5
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The answer is a whole number, and it happens to be 1 
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4 years ago
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If marco walks 5 dogs for 12 minutes each, how much money will he earn?
Ket [755]
Since Marco makes 10$ an hour for every dog he walks, we need to see how much money he would make per minute.

To find out how much money he makes per minute, we divide 10.00 by 60.

10.00÷60= 0.16666

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Next, we multiply 0.17 by 12, so we know how much money he makes every twelve minutes. 

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Since he's walking 5 dogs, we multiply 2.04 by five.

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I hope you have a wonderful day! :D
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Unit means one.

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Example of the unit fractions are

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