Answer:
Probability is 
Step-by-step explanation:
This problem can be easily done tree diagram.
Few things keep in mind :
- From starting of match three victories of A.
- Less then or equal to two victories of B.
- In each matches there are two possibilities either favourable for A or B.
First case if A wins first match
- two victories of B then two of A
- victory of B then A then B then A
- victory of B then A then A
Second case if B wins first match(favorable)
- victory of two B then three A
So total cases are 4 and favorable is one
probability=
[Tree diagram is in attachment]
Step-by-step explanation:
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Step 1:
Wright the equation
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Step 2:
Transfer the power of y ie ¹² up to subtract it
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Step 3:
by subtracting the powers we get 0
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Step 4:
so the results comes 1 because anything ⁰=1
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⚡Final answer :1✓
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hope it helped you:)
I believe by intersect, you mean perpendicular. Also, skew lines can be on parallel planes and still intersect. If they intersected, then the degrees must be 90
Answer:
2/3
Step-by-step explanation:
In the 5-minute interval between 7:00 and 7:05, a train to B is the first to arrive. In the 10-minute interval between 7:05 and 7:15, a train to A is the first to arrive. That is, in any 15-minute interval, the probability is 10/15 = 2/3 that a train to A is the first to arrive.
The 1-hour interval between 7 A.M. and 8 A.M. is an integer number of such intervals, so ...
2/3 of the time, he or she will go to destination A.
