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Marianna [84]
3 years ago
12

Solve. 1/2x + 3 < 4x - 7 A) x > 8/7 B) x < -8/7 C) x > 20/7

Mathematics
1 answer:
anyanavicka [17]3 years ago
5 0
C would be your answer and here is how you would solve the problem.

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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

7 0
3 years ago
Charlie and Rashan collect miniature cars. They have the same number of cars in their collections. Charlie sold 5/8 of his colle
gtnhenbr [62]

Answer:

5/8 is more than 1/2  4/10 is less than 1/2 so 5/8 is more than 4/10

So that means that Charlie sold more of his collection than Rashan

Step-by-step explanation:

Hope this helped out.

4 0
2 years ago
Sheila buys some boxes of pens, with 20 pens in each box. Which expression represents the total number of pens Sheila bought? 20
Mazyrski [523]
The answer is 20p. P represents the number of boxes she buys and 20 is how many pens are in each box.
7 0
3 years ago
Write (7,3) and (4,0) in slope intercept form
bazaltina [42]
The answer is y=x-4
7 0
3 years ago
Need help ASAP due in 7 minutes <br> Will make you brainlist
Reika [66]

Answer:

A

Step-by-step explanation:

A is the only answer with ordered pairs that have a consistent rate of change, -1/3

6 0
3 years ago
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