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Gnesinka [82]
3 years ago
7

A jar contains 5 black and 9 white marbles priscilla draws a marble from the jar what is the probability that she drew a black m

arble
Mathematics
2 answers:
Vanyuwa [196]3 years ago
5 0
The probability of the black marble will be 35.7% because 100/(9+5) is 7.14 and you multiply  that by 5 to get 35.7%.
Citrus2011 [14]3 years ago
4 0

Answer:

The correct answer is 5/14  because there is 14 marbles and only 5 of them are black, there's the possibility that she will only draw a black marble 5 times Hopefully this helps!

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Solve the following rational equation plz help!!
Yuri [45]

Answer:

x = \frac{9}{4}

Step-by-step explanation:

Given

\frac{4x}{x+1} - \frac{5}{x} = \frac{4}{x^2+x} ← factor denominator

\frac{4x}{x+1} - \frac{5}{x} = \frac{4}{x(x+1)}

[ x ≠ 0, x ≠ - 1 as these would make the terms undefined ]

Multiply through by x(x + 1)

4x² - 5(x + 1) = 4

4x² - 5x - 4 = 4 ( subtract 4 from both sides )

4x² - 5x - 9 = 0 ← in standard form

(x + 1)(4x - 9) = 0 ← in factored form

Equate each factor to zero and solve for x

x + 1 = 0 ⇒ x = - 1

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However, x ≠ - 1 for reason given above, then

solution is x = \frac{9}{4}

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3 years ago
John does 96 pushups and 4 days how many pushups does he do in one day
Vsevolod [243]
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3 years ago
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In a large population of college students 20% of the students have experienced feelings of math anxiety. If you take a random sa
NARA [144]

Answer:

In a large population of college students 20% of the students have experienced feelings of math anxiety. If you take a random sample of 10 students from this population, the probability that exactly 2 students have experienced math anxiety is:

Step-by-step explanation:

a .3020

b .2634

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Answer:

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Step-by-step explanation:

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Therefore, the state income tax to be paid will be $ 2,300.

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