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Westkost [7]
3 years ago
12

A bag contains 8 gray glass marbles, 2 gray metal marbles, 4 black glass marbles, and 6 black metal marbles. If one marble is dr

awn at random, what is the probability that it is glass, given that it is one of the black marbles?
A. 1/5
B. 1/3
C. 2/5
D. 1/2
Mathematics
1 answer:
Vera_Pavlovna [14]3 years ago
4 0

Answer:

1/5

Step-by-step explanation:

Total marbles = 20

Black marbles = 10

(10/20) x (4/10)

= (1/2) x (2/5)

= 2/10

= 1/5

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TEKS 7.61 Nataly has 6 pink bows, 1 blue bow, and 3 purple bows in a box. She will randomly choose 1 bow from the box. What is t
dusya [7]

Given:

Number of pink bows = 6

Number of blue bows = 1

Number of purple bows = 3

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To find:

The probability that the Nataly will choose a pink bow.

Solution:

The total number of bows is:

6+1+3=10

The  total number of bows is the total outcomes.

Total outcomes = 10

The number of pink bows is the favorable outcomes.

Favorable outcomes = 6

We know that, the probability that the Nataly will choose a pink bow is

\text{Probability}=\dfrac{\text{Number of pink bows}}{\text{Total number of bows}}

\text{Probability}=\dfrac{6}{10}

\text{Probability}=0.6

Therefore, the probability that Nataly will choose a pink bow is 0.6.

7 0
3 years ago
An arts academy requires there to be4 teachers for every68 students and3 tutors for every30 students. How many students does the
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Answer:

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2.10

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2 years ago
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