Answer:
x = 45
Step-by-step explanation:
→ Add all the angles together
x + 2x + 3x + 90 = 360
→ Simplify
6x + 90 = 360
→ Minus 90 from both
6x = 270
→ Divide by 6
x = 45
Answer:
aww dont cry happy early birthday bestie ^^
Step-by-step explanation:
Using it's concept, the experimental probability that in a group of 4 students, at least one of them has green eyes is of 0.45 = 45%.
<h3>What is a probability?</h3>
A probability is given by the <u>number of desired outcomes divided by the number of total outcomes</u>. An experimental probability is calculated considering the results of previous trials.
In this problem, there were 20 trials. The digit 9, which represents a student with green eyes, appears at least once in 9 of the the trials, hence the probability is:
p = 9/20 = 0.45 = 45%.
More can be learned about probabilities at brainly.com/question/14398287
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Answer:
![\frac{1716}{132600}](https://tex.z-dn.net/?f=%5Cfrac%7B1716%7D%7B132600%7D)
Step-by-step explanation:
Assuming they removed the jokers there are 52 cards in a deck and 13 hearts
You can calculate the odds of something by multiplying the odds together, because you don't put back the card you drew you have to subtract 1 from both the numerator and denominator
![(\frac{13}{52})(\frac{12}{51})(\frac{11}{50})=\frac{1716}{132600}](https://tex.z-dn.net/?f=%28%5Cfrac%7B13%7D%7B52%7D%29%28%5Cfrac%7B12%7D%7B51%7D%29%28%5Cfrac%7B11%7D%7B50%7D%29%3D%5Cfrac%7B1716%7D%7B132600%7D)
Therefore the probability of pulling 3 cards that are all hearts are ![\frac{1716}{132600}](https://tex.z-dn.net/?f=%5Cfrac%7B1716%7D%7B132600%7D)