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experimentally it landed on tails 5/12  tails/rolls=5/12 so if this continues how many rolls will it take to get 30 tails?

5/12=30/r

5r=12(30)

5r=360

r=72

72 rolls to get 30 tails

If the coin landed on tails 30 times, there are 72 tosses.

What is the experimental probability?

Experimental probability is a probability that is determined on the basis of a series of experiments.

Let, the number of tosses is x.

The experimental probability of a coin landing on heads is 7/12.

If the coin landed on tails them the probability is;

[tex]= 1-\dfrac{7}{12}\\\\=\dfrac{12-7}{12}\\\\=\dfrac{5}{12}[/tex]

if the coin landed on tails 30 times, find the number of tosses.

[tex]\rm \dfrac{5}{12}=\dfrac{30}{x}\\\\5\times x=30 \times 13\\\\5x=360\\\\x=\dfrac{360}{5}\\\\x=72[/tex]

Hence, If the coin landed on tails 30 times, there are 72 tosses.

Learn more about probability here;

https://brainly.com/question/16541187

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