<span><span>The probability of all calculators having no defects is 16.8%. The probability of at least one defect is the complement of that probability.
ie an 83.2% probability of at least one defect.</span><span>
</span></span>
<span>circumference is L=2

L=2π9=18π=18*3.14=56.52 in
Answer: </span>circumference is <span>18π or 56.52 in</span>
Answer:
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Step-by-step explanation:
So we have 52 horses. We know that 12 are white, so:
W : B - 12: x, where x is the unknown amount of horses.
52 - the twelve white horses = 40 other horses.
This means that there are 40 black horses, so the ration of W:B is 12:40. We can simplify this ratio.
The highest common factor of both numbers is 4, so the ratio can be divided by four, giving 3:10.
Therefore the ratio is 3:10.
Hope I helped!