Solve for the value of r. (8r+6)° (9r-7)
1 answer:
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Given a group of n object. We want to make a selection of k objects out of the n object. This can be done in
C(n, k) many ways, where
,
where k!=1*2*3*...(k-1)*k
Thus, we can do the selection of 3 cd's out of 5, in C(5,3) many ways,
where
Answer: 10
C(n, k) many ways, where
where k!=1*2*3*...(k-1)*k
Thus, we can do the selection of 3 cd's out of 5, in C(5,3) many ways,
where
Answer: 10
Answer:
See explanation
Step-by-step explanation:
The surface area of the solid generated by revolving the region bounded by the graphs can be calculated using formula
If then
and
Therefore,
Apply substitution
Then
Now
Hence,
The probability of getting 0 heads in 4 tosses (or equivalently, 4 tails) is
So the desired probability is