An irrational number is a number that cannot be expressed as a fraction, like Pi
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The square root of 2 is irrational as it cannot be expressed as a fraction since the decimal never stops and never repeats.
Same goes for the square root of 3, and 5
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Square root of 1 is rational as because the square root of 1 is 1, and the number 1 can be expressed as a fraction (1/1)
Answer:
18
Step-by-step explanation:
90 % 5 = 18 so A would measure 90º
Answer:
Step-by-step explanation:
There are 20 ballots, 8 have drawn a car the rest are white.
Find the probability to extract at least one ballot with the drawing of a car if not replaced:
1. If a ballot is taken out:
8 have drawn a car: thus we have 8/20 = 2/5
2. If two ballots are removed, probability of extracting 1 ballot with drawing of car is 8/20 leaving 7 out of 19 remaining. The 7/19 is the probability of drawing out a second ballot with the drawing of a car. Thus we have
8/20 * 7/19 = 56/380 = 14/95
3. If three ballots are removed, probability of extracting 1 ballot with drawing of car is 8/20 leaving 7 out of 19 remaining. The 7/19 is the probability of drawing out a second ballot with the drawing of a car leaving 6 out of 18 remaining. The 6/18 is the probability of drawing out a third ballot with the drawing of a car.
8/20 * 7/19 * 6/18 = 42/855
<span>x^2+5x+6=0
(x+3)(x+2) = 0
x+3 = 0
x = -3
</span>x+2 = 0
x = -2
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Solutions: x = -3 and x = -2
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The answer would be 0.95 totaling 1 as there is only 1 chance that this will happen
