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3 years ago

HELP ASAP PLZ

Mathematics

2 answers:

blagie [28]3 years ago

4 0

9/38 x 9 /38 =81/144 both of the events are indepent

Alisiya [41]3 years ago

4 0

Answer:

The correct option is D. 9/38x9/38 =81/1444

Step-by-step explanation:

Total number of marbles in the bag = 38

Number of white marbles in the bag = 14

Number of gray marbles in the bag = 9

Number of blue marbles in the bag = 15

We need to find the probability that Jane takes out a gray marble in both draws

$\text{Probability that Jane draws gray marble in first draw = }\frac{9}{38}$

Given that : Then Jane replaces the marble for the second draw

$\text{Probability that Jane draws gray marble in second draw = }\frac{9}{38}$

$\text{Probability that Jane draws gray marble in both draws = }\frac{9}{38}\times \frac{9}{38}$

$\text{Probability that Jane draws gray marble in both draws = }\frac{81}{1444}$

Therefore, The correct option is D. 9/38x9/38 =81/1444

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4 years ago

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3 years ago

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Step-by-step explanation:

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3 years ago

2.02b + 4.30 = 2.00b + 6.30

bonufazy [111]

Answer: b = 100

Step-by-step explanation:

simplifying

2.02b + 4.30 = 2.00b + 6.30

reorder the terms:

4.30 + 2.02b = 2.00b + 6.30

reorder the terms:

4.30 + 2.02b = 6.30 + 2.00b

solving

4.30 + 2.02b = 6.30 + 2.00b

solving for variable 'b'.

move all terms containing b to the left, all other terms to the right.

add '-2.00b' to each side of the equation.

4.30 + 2.02b + -2.00b = 6.30 + 2.00b + -2.00b

combine like terms: 2.02b + -2.00b = 0.02b

4.30 + 0.02b = 6.30 + 2.00b + -2.00b

combine like terms: 2.00b + -2.00b = 0.00

4.30 + 0.02b = 6.30 + 0.00

4.30 + 0.02b = 6.30

add '-4.30' to each side of the equation.

4.30 + -4.30 + 0.02b = 6.30 + -4.30

combine like terms: 4.30 + -4.30 = 0.00

0.00 + 0.02b = 6.30 + -4.30

0.02b = 6.30 + -4.30

combine like terms: 6.30 + -4.30 = 2

0.02b = 2

divide each side by '0.02'.

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3 years ago

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4 years ago