There are 9 yellow and 4 purple balls in a bag. If you randomly choose balls one at a time, with replacement, what is the probab
ility of choosing 1 yellow ball and then 2 purple balls?
165/5210
24/1329
144/2197
28/1335
1 answer:
9+4 = 13 total balls
1st pick would be 9/13 probability of picking yellow
2nd pick would be 4/13 probability
3rd pick would be 4/13 probability
total probability : 9/13 * 4/13 * 4/13 = 144/2197
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(x² + 16)(x² - 16)
= (x²)² - 16²
= x⁴ - 256
Answer:A≈1320.25ft²
Step-by-step explanation:
A=1
4πd2=1
4·π·412≈1320.25431ft²
