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docker41 [41]
2 years ago
9

Three lightship flash simultaneously at 6 00 a.m the first lightship flashes every 12 sec the second lightship every 30 sec and

the third lightship every 66 sec
At what time will the three lightship next flshes together
Mathematics
1 answer:
Dmitrij [34]2 years ago
6 0
They will all flash their lights together at 5:00 pm
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Which model represents the factors of x^2 + 9x+8?​
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Why did the 30-60-90 triangle marry the 45-45-90 triangle
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3 years ago
Computer software generated 500 random numbers that should look like they are from the uniform distribution on the interval 0 to
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Answer:

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Given that the probability of each of the 5 groups is the same :

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(99 - 100)^2 / 100 = 0.01

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7 0
2 years ago
Plz help me!!!!!!!!!!!!
Mashutka [201]

Answer:  3, -3, 3i, -3i

<u>Step-by-step explanation:</u>

<u>x^4-81=0\\\\Factor:\\(x^2-9)(x^2+9)=0\\(x-3)(x+3)(x^2+9)=0\\\\\text{Apply the Zero Product Property:}\\x-3=0\qquad x+3=0\qquad x^2+9=0\\\boxed{x=3}\qquad \qquad \boxed{x=-3}\qquad \quad x^2=-9\\.\qquad \qquad \qquad \qquad \qquad \qquad x=\sqrt{-9}\\.\qquad \qquad \qquad \qquad \qquad \qquad \boxed{x=\pm 3i}</u>

7 0
3 years ago
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