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julia-pushkina [17]
4 years ago
14

PLEASE HELP ME FAST!!!!

Mathematics
1 answer:
TEA [102]4 years ago
4 0

Answer:

b

Step-by-step explanation:

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Davie and Horatio are riding their motorbikes on a scenic tour that is 80 miles long. Davie rides at 20 miles per hour and leave
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80 divided by 20=4
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Hello!
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I need help with number 5
lara31 [8.8K]

Answer:

-14 *F

Step-by-step explanation:

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3 years ago
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A batch of 40 parts contains six defects. If two parts are drawn randomly one at a time without replacement, what is the probabi
adell [148]

Answer:

a) Therefore, the probability is P=1/52.

b) Therefore, the probability is P=9/400.

Step-by-step explanation:

We know that a  batch of 40 parts contains six defects.

a) We calculate the probability that the both parts are defective, if two parts are drawn randomly one at a time without replacement.

The probability for the first is 6/40.

The probability for the second is 5/39.  

We get:

P=\frac{6}{40}\cdot \frac{5}{39}\\\\P=\frac{1}{52}

Therefore, the probability is P=1/52.

b) We calculate the probability that the both parts are defective, if two parts are drawn randomly one at a time with replacement.

The probability for the first is 6/40.

The probability for the second is 6/40.  

We get:

P=\frac{6}{40}\cdot \frac{6}{40}\\\\P=\frac{9}{400}

Therefore, the probability is P=9/400.

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3 years ago
12+23x=34x+45
xeze [42]

Answer:

12+23X=34X+45

12-45=34X-23X

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