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emmasim [6.3K]
3 years ago
13

Gabriella bought a pile of bricks to build a brick wall. Yesterday, she used 5/8 of the bricks. Tomorrow, she plans to use anoth

er 1/4 of the original brick pile.
Mathematics
1 answer:
velikii [3]3 years ago
7 0

she would have 1/8 bricks left, hope this helps

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In the most recent election, 19 percent of all eligible college students voted. If a random sample of 20 students were surveyed,
lora16 [44]

Answer:. This would be 0.81^20 for none of the 19=0.0148

Step-by-step explanation:With a tree diagram, there are two possibilities, one is ND from 1 D from 2, with probability (5/8)(2/5)=(1/4) and the other is (3/8)(3/5)=9/40 That would be 19/40 for the answer.

3. Poisson parameter lambda=5

for P(0), it is e^(-5)(5^0)/0! or e^(-5)=0.0067

 

for P(1), it is e^(-5)(5^1)/1! or 5e(-5)

The total probability is 6e^-5 or 0.0404

4. the mean is 1000 hours, so lambda is the reciprocal or 1/1000

the probability it will last <800 hours is 1-e^(-800*1/1000) or 1-e^(-.8)=0.5507

5. assume p=0.4 since it ca't be 4

sd is sqrt (np*(1-p))=sqrt (6*0.6=sqrt(3.6)=1.90

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3 years ago
Can the sides of a triangle have lengths 1, 4, and 7?
Nadusha1986 [10]

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No

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No because the measure of two sides are always greater than the third side

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Please help me with this question I would really appreciate it!!!
shepuryov [24]

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0, 1.32

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