Answer:
There are a total of 4 + r + 6 marbles in the bag
The probability of a blue is
The probability of a red is
The probability of choosing a blue, replacing it and then a red is
×
= [tex]\frac{4r}{100+20r+ r^{2} /[tex]
Step-by-step explanation:
Answer:
Check the explanation
Step-by-step explanation:
Since each and every one of the 4 hallways is equally likely then

Now, if he chooses H1 he escapes after 12 minutes then

If he chooses H2 then he wastes 10 minutes and then he is again in the same starting
position so he expects to escape in E(T) minutes, then

Analogously, if he chooses H3 then he wastes 40 minutes and then he is again in the same starting
position so he expects to escape in E(T) minutes, then

Therefore

So we have

Therefore he is expected to escape in 72 minutes
Answer:
(-2,5)
Step-by-step explanation:
4x+4y=12
6x-4y=-32
10x=-20
x=-2
4(-2)+4y=12
-8+4y=12
4y=20
y=5
i think it is because...
the slope of line b is slightly steeper than the slope of line a.
hope this helps!