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Sergeeva-Olga [200]
3 years ago
6

Roger and Rita each drive at a constant speed between Phoenix and San Diego. Each driver’s distance for the same section of the

trip is displayed below.
Who had a head start, and how many miles was the head start?

Mathematics
2 answers:
motikmotik3 years ago
7 0

Answer:

The one you chose in the image is correct (A)

SpyIntel [72]3 years ago
7 0

Answer:

a: Rita had a 28 mile head start

Step-by-step explanation:

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A small gym in Biloxi, Mississippi, averages about 50 customers on weekdays with a standard deviation of 10. It is safe to assum
andreyandreev [35.5K]

Answer:

It is very unusual as the probability to get a sample average of 75 or more customers if the manager had not offered the discount is 0.006    

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 50

Standard Deviation, σ = 10

We are given that the distribution of number of customers is a bell shaped distribution that is a normal distribution.

In an attempt to increase the number of weekday customers, the manager offers a $10 membership discount on 5 consecutive weekdays and  the sample mean of customers during this weekday period jumps to 75.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

a) P(sample average of 75 or more customers if the manager had not offered the discount)

P(x > 75)

P( x > 75) = P( z > \displaystyle\frac{75 - 50}{10}) = P(z > 2.5)

= 1 - P(z \leq 2.5)

Calculation the value from standard normal z table, we have,  

P(x > 610) = 1 - 0.994 = 0.006= 0.6\%

It is very unusual as the probability to get a sample average of 75 or more customers if the manager had not offered the discount is 0.006

b) Yes, the managers discount strategy worked as it increased the average number of customers from 50 customers to 75 customers.

3 0
3 years ago
In math class the girl to boy ratio is 8 to 6 if there are 24 girls in the class , how many boys are there ?
Volgvan

Answer:  The required number of boys in the class is 18.

Step-by-step explanation: Given that in math class, the girl to boy ratio is 8 to 6 and there are 24 girls in the class.

We are to find the number of boys in the class.

Let 8x and 6x represents the number of girls and boys in the class.

Then, according to the given information, we have

8x=24\\\\\Rightarrow x=\dfrac{24}{8}\\\\\Rightarrow x=3.

Therefore, the number of boys in the class is given by

6x=6\times3=18.

Thus, the required number of boys in the class is 18.

7 0
3 years ago
2 over 3 multiplied by 15
otez555 [7]

Answer: 2/3 multiply that by 15 and you get 30/3 witch simplified is 10

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
What is the median of the following string of values? 51 22 17 28 98 4 24 83 9 76
Yanka [14]

Answer:

26

Step-by-step explanation:

4,9,17,22,<u>24,28</u>,51,76,83,98

24+28=52

52/2=26

4 0
4 years ago
Read 2 more answers
3) A cable company had 595 subscribers. The ratio of regular subscribers to premium
IgorLugansk [536]

Answer:

280

Step-by-step explanation:

We know that there are at least 8 regular subscribers and there are at least 9 premium subscribers. And we know it's in that ratio. So the best way to start this is to divide 595 by 8+9 to get the single unit amount of both subscribers:

595/17 = 35

So one unit of anything is at least 35. Now, since we're looking for regular subscribers, we'll multiply this value by 8:

35*8 = 280

So 280 is our answer!

9 0
3 years ago
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