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Ray Of Light [21]
3 years ago
12

BRAINLIEST! I really need help I need real answers not just guessing

Mathematics
1 answer:
Thepotemich [5.8K]3 years ago
5 0

Answer:

x = 12

Step-by-step explanation:

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You randomly select one card from a 52-card deck. Find the probability of selecting a black three or a red jack ) The probabilit
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1/13

2 black 3s and 2 red Jacks, 4 cards out of 52.
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3 years ago
Suppose that 80% of all trucks undergoing a brake inspection at a certain inspection facility pass the inspection. Consider grou
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Answer:

P=0.147

Step-by-step explanation:

As we know 80% of the trucks have good brakes. That means that probability the 1 randomly selected truck has good brakes is P(good brakes)=0.8 . So the probability that 1 randomly selected truck has bad brakes Q(bad brakes)=1-0.8-0.2

We have to find the probability, that at least 9 trucks from 16 have good brakes, however fewer than 12 trucks from 16 have good brakes. That actually means the the number of trucks with good brakes has to be 9, 10 or 11 trucks from 16.

We have to find the probability of each event (9, 10 or 11 trucks from 16 will pass the inspection) .  To find the required probability 3 mentioned probabilitie have to be summarized.

So P(9/16 )=  C16 9 * P(good brakes)^9*Q(bad brakes)^7

P(9/16 )= 16!/9!/7!*0.8^9*0.2^7= 11*13*5*16*0.8^9*0.2^7=approx 0.02

P(10/16)=16!/10!/6!*0.8^10*0.2^6=11*13*7*0.8^10*0.2^6=approx 0.007

P(11/16)=16!/11!/5!*0.8^11*0.2^5=13*21*16*0.8^11*0.2^5=approx 0.12

P(9≤x<12)=P(9/16)+P(10/16)+P(11/16)=0.02+0.007+0.12=0.147

7 0
3 years ago
Write an equation of the line that passes through (0, 4) and (0, -3)
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Answer: Slope is undefined. x=0

slope calculation: -3-4/0-0 = -7/0 and anything divided by 0 is undefined

the x value in the coordinates is 0 so it’s x=0 line.

vertical lines always have undefined slopes

8 0
3 years ago
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Ted says that 3 tenths multiplied by 100 equals 300 thousands.is he correct? Use. Place value chart to explain your anwer
abruzzese [7]
Yes he is correct because the 3 was in the tenths place. so say that the 3 is in the ones place multiply it by 10 and equales 3000. so you are just taking one zero with it
4 0
3 years ago
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A moving company has one large truck for furniture and one small truck for boxes. During one move, it took the large truck 4 hou
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Answer:

large truck = 45miles small truck = 60miles

Step-by-step explanation:

180/4 and 180/3

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3 years ago
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