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marysya [2.9K]
3 years ago
6

Explain why the greater than or equal to and less than or equal to symbols have a closed circle, while the greater than and less

than symbols have an open circle.
Mathematics
1 answer:
mezya [45]3 years ago
7 0

the circle is closed because it can also include that number or be equal to it, when the circle is open that number isn't an option and is just a starting point.


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A university knows from historical data that 25% of students in an introductory statistics class withdraw before completing the
Vikki [24]

Answer:

13.4%

Step-by-step explanation:

Use binomial probability:

P = nCr p^r q^(n-r)

where n is the number of trials,

r is the number of successes,

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and q is the probability of failure (1-p).

Here, n = 16, r = 2, p = 0.25, and q = 0.75.

P = ₁₆C₂ (0.25)² (0.75)¹⁶⁻²

P = 120 (0.25)² (0.75)¹⁴

P = 0.134

There is a 13.4% probability that exactly 2 students will withdraw.

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3 years ago
What is A, B, and C?
marta [7]

Answer:

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Step-by-step explanation:

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3 years ago
Carlos is using the quadratic formula to find the solutions of y=3x^2-5x-2. Which of the following will simplify to the correct
Nana76 [90]

Answer:

Fx=\frac{5\pm\sqrt{25+24} }{6}

Step-by-step explanation:

A quadratic equation in one variable given by the general expression:

ax^2+bx+c

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The roots of this equation can be found using the quadratic formula, which is given by:

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So:

y(x)=3x^2-5x-2=0

As you can see, in this case:

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Using the quadratic formula:

x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}=\frac{-(-5)\pm\sqrt{(-5)^2-4(3)(-2)} }{2(3)}=\frac{5\pm\sqrt{25+24} }{6}

Therefore, the answer is:

Fx=\frac{5\pm\sqrt{25+24} }{6}

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P(WW)=(2/9)(10/14)

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What fraction is equivalent to 4/24​
matrenka [14]

Answer:

1/6

Step-by-step explanation:

If you divide the numerator and the denominator by 4, you will get a simplified fraction 1/6

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