Answer:
a) 1/27
b) 2/91
Step-by-step explanation:
A bag contains 10 red marbles and 5 blue marbles (15 marbles in total). You randomly select 3 marbles from the bag.
a) You replace each marble before selecting the next one.
The probability of selecting one blue marble is
then the probability that all 3 marbles are blue is
b) You do not replace each marble before selecting the next one. Each time the number of blue marbles decreases by 1 and the total number of marbles decreases by 1 too. So the probability that all 3 marbles are blue is
Answer:
1:4
Step-by-step explanation:you can simplify the ratio by finding the LCM on both sides and dividing the number by the lcm in which this case is 15.
15/15=1
60/15=4
so 1:4
Answer:
Part A: C. 4 to 1
Part B: 2
Step-by-step explanation:
<h3>Part A: </h3>
What is the ratio of the number of students receiving a C and the number of students receiving an A?
<u>As per table given:</u>
- 12 students received a C and 3 students received a A
The ratio C/A is:
The correct answer choice is:
<h3>Part B: </h3>
Complete the statement:
For every student receiving a D, ______ students received a B.
<u>As per table given:</u>
- 4 students received a D and 8 students received a B
<u>The ratio D/B is:</u>
<u>The statement is:</u>
- For every student receiving a D, 2 students received a B.
Answer:
1) 760
2)1970
3) 1110
Step-by-step explanation:
ANSWER:}------> <u><em>line b</em></u>
