You wish to roll a 7 on and 8-sided die. what is the probability that the first 7 happens on the 3rd, 4th, or 5th try?

0.15%

Step-by-step explanation:

The probability of rolling a 7 on a 8-sided die will always be:

We know that for the first two tries that there is 7/8 chance that the die will land on anything but a 7:

For the die to land on a 7 the 3rd, 4th and 5th try is:

The probability is therefore:

The probability that the die will land on a 7 not on the first and second try but on the 3rd, 4th and 5th try is 0.15%

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

step-by-step explanation:

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