Hey there!
If we have two white marbles and seven purple marbles, our first probability is out of nine.
First of all, we have the probability of selecting a purple marble, 7/9.
Now, if we do not replace it, there are only eight marbles left. Therefore, getting a white marble is 2/8, or 1/4.
We multiply these probabilities together to get our answer to a.
7/9(1/4)= 7/36
a. 7/36
Now, let's do b. We have 2/9, and then 1/8, giving us 1/36.
b. 1/36
Now, let's calculate selecting two purple to help us with C.
We have 7/9, and then 6/8, or 3/4.
7/9(3/4)= 7/12
Since there is a majority of purple marbles, there is a C) greater probability of selecting two purple marbles in a row.
I hope this helps!
Answer:
2.5
Step-by-step explanation:
The radius is half of the diameter. 5 / 2 = 2.5
total distance * 30 percent = 6 miles
total distance * .3 = 6 miles
divide by .3 on both sides
total distance = 6/.3
total distance = 20 miles
Answer:
2315₁₀ = 3152₉
Step-by-step explanation:
2315÷9 = 257 R2
257÷9 = 28 R5
28÷9 = 3 R1
3÷9 = 0 R3
The remainders, last to first, are 3, 1, 5, 2.
2315₁₀ = 3152₉
