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Morgarella [4.7K]
3 years ago
12

A long-distance runner started on a course at an average of 9 mph half an hour later a second runner begin the same course of an

average of speed of 11 mph how long after the second runner starts the second runner take over the first runner

Mathematics
1 answer:
Firdavs [7]3 years ago
3 0

Answer:

2.25 hours

Step-by-step explanation:

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PLEASE HELP WILL GIVE BRANILIEST
masya89 [10]

Answer:

It is a function because the x values don't repeat

Step-by-step explanation:

8 0
2 years ago
Find what x is 17+7x=x+5
marusya05 [52]

Step-by-step explanation:

17+7x=x+5

6x=-12

x=-2

Hope it helps you

4 0
2 years ago
Read 2 more answers
Choose the product. -5p 3(4p 2 + 3p - 1) -20p 5 - 15p 4 + 5p 3 -20p 6 - 15p 4 - 5p 3 -20p 5 + 3p - 1 20p 5 + 15p 4 - 5p 3
Likurg_2 [28]
<span>-5p^3(4p^2 + 3p - 1) = -20p^5 - 15p^4 + 5p^3

answer is

A. first one
  </span>-20p^5 - 15p^4 + 5p^3
5 0
3 years ago
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Will give BRAINLIEST ​
Law Incorporation [45]

Answer:

B

Step-by-step explanation:

3 0
3 years ago
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A banks loan officer rates applicants for credit. The ratings are normally distributed with a mean of 200 and a standard deviati
Alona [7]

Answer:

2.87%

Step-by-step explanation:

We have the following information:

mean (m) = 200

standard deviation (sd) = 50

sample size = n = 40

the probability that their mean is above 21.5 is determined as follows:

P (x> 21.5) = P [(x - m) / (sd / n ^ (1/2))> (21.5 - 200) / (50/40 ^ (1/2))]

P (x> 21.5) = P (z> -22.57)

this value is very strange, therefore I suggest that it is not 21.5 but 215, therefore it would be:

P (x> 215) = P [(x - m) / (sd / n ^ (1/2))> (215 - 200) / (50/40 ^ (1/2))]

P (x> 215) = P (z> 1.897)

P (x> 215) = 1 - P (z <1.897)

We look for this value in the attached table of z and we have to:

P (x> 215) = 1 - 0.9713 (attached table)

P (x> 215) =.0287

Therefore the probability is approximately 2.87%

4 0
3 years ago
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