72-2x=86-3x solve for x
1 answer:
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Answer:
The probability of selecting randomly 6 packets such that the first 4 contain cocaine and 2 not is 0.3522.
Step-by-step explanation:
Probabilities of selecting 4 packets with the ilegal substance:
=
Combinassions possible= 1365
Probabilities of selecting 2 packets with white powder:
=
Combinations possible= 10
Probabilities of selecting 6 packets from the totality of them:
=
Combinations possible= 38760
The probability of picking 4 with the substance and 2 with only white powder is:
= 0.3522
I hope this answer helps you.
Answer:
1/2
-1/2
Step-by-step explanation:
we know that
If a dilation produce a contraction that means that the absolute value of the scaling factor is less than 1
If a dilation produce an enlargement that means that the absolute value of the scaling factor is greater than 1
<u><em>Verify each case</em></u>
case 1) 2
----> is a enlargement
case 2) 1/2
----> is a contraction
case 3) -2
----> is a enlargement
case 4) -1/2
----> is a contraction