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nikklg [1K]
3 years ago
9

A bag contains 5 blue marbles, 6 red marbles, and 9 green marbles. Two marbles are drawn at random, one at a time and without re

placement. What is the probability of selecting two red marbles?
A.) 9/20

B.) 3/38

C.) 1/19

D.) 11/20
Mathematics
1 answer:
ArbitrLikvidat [17]3 years ago
5 0
Should be C. 1/19. because if there's 20 maebles in the bag and without replacing the marble then it actually would be 2/18
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PLEASE HELP WITH THIS QUESTION​
Radda [10]

Answer:

The correct answer is Redbirds

P = 4/5 = 0.8

4 0
3 years ago
Simplify the expression to a polynomial in standard form:<br> (3x – 10)(x2+ 2x - 1 )
KonstantinChe [14]

Answer:

3 x ^3  −  4 x ^2  −  23 x  +  10

Step-by-step explanation:

hope this helps!

3 0
3 years ago
Prisha rolls a fair number cube multiple times and records the result of each roll. Her results are shown in the table.
Leona [35]

Answer:

The experimental probability of rolling a 3 is greater than the theoretical probability of rolling a 3

Step-by-step explanation:

* Lets explain the difference between the theoretical probability and

 experimental probability

- Theoretical probability is what we expect to happen

- Experimental probability is what actually happens when we try it out

- Both of them calculated by the same way, the number of possible ways

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* Lets solve the problem

- The table has two column;

# Number Cube             # Observed Frequency

           1                                           18

           2                                          16

           3                                          24

           4                                          26

           5                                          16

           6                                          20

        Total                                      120

∵ The experimental probability of rolling a 3 = 24/120 = 1/5 = 0.2

∴ The experimental probability of rolling a 3 = 0.2 = 20%

∵ The theoretical probability of rolling a 3 = 1/6

∴ The theoretical probability of rolling a 3 = 0.1666 ≅ 17%

∵ 20% is greater than 17%

∴ The experimental probability of rolling a 3 is greater than the

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7 0
3 years ago
Read 3 more answers
Select the expression that simplifies to 1 / x^1/8
Troyanec [42]

Answer:

\left(\displaystyle \sqrt[3]{x^{-\tfrac 35}}\right)^{\tfrac 58}

Step-by-step explanation:

\left(\displaystyle \sqrt[3]{x^{-\tfrac 35}}\right)^{\tfrac 58}\\\\\\=\left[ \left(\displaystyle x^{-\tfrac 35} \right)^{\tfrac 13 \right]^{\tfrac 58}\\\\\\=\left( \displaystyle x^{-\tfrac 35}\right)^{\tfrac 5{24}}\\\\\\=x^{ \displaystyle -\tfrac{3}{24}  \right}\\\\\\=x^{\displaystyle -\tfrac 18  }\\\\\\=\dfrac 1{x^{\tfrac 18}}

4 0
2 years ago
What is the value of the expression? −1/4+3/8 5/8 Enter your answer in simplest form.
galina1969 [7]
Decimal form
-0.015625

Exact form
-1/60
Negative one over sixty
7 0
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