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sergeinik [125]
2 years ago
6

Please answer this quick. will give brainliest

Mathematics
1 answer:
Vsevolod [243]2 years ago
8 0

Answer:

the time Ari spent to walk is

1 \frac{3}{4}  \div 1 \frac{1}{4}  = 1.4(h)

the time Beth spent to walk is

1 \frac{1}{2}  \div 1 \frac{1}{8}  = 1.(3)(h)

the time Cathy spent to walk is 1h21' = 1.35(h)

so the time Ari spent > Cathy > Beth

=> list: Beth, Cathy, Ari

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The manager went over the sales of mobile phones at the store and found that the mean sale was 45, with a standard deviation of
d1i1m1o1n [39]

The z-score of the sale of mobile phones on that day is 1.75

Step-by-step explanation:

The formula of z-score is z = (x - μ)/σ, where:

  • x is the score
  • μ is the mean
  • σ is the standard deviation

∵ The mean sale was 45

∴ μ = 45

∵ The standard deviation was 4

∴ σ = 4

∵ 52 mobile phones were sold on a particular day

∴ x = 52

To find z-score of the sale of mobile phones on that day substitute the values of x, μ, and σ in the formula of z-score

∵ z=\frac{52-45}{4}

∴ z=\frac{7}{4}

∴ z = 1.75

The z-score of the sale of mobile phones on that day is 1.75

Learn more:

You can learn more about z-score in brainly.com/question/7207785

#LearnwithBrainly

3 0
3 years ago
How many times greater is the digit in the tens place than digit on the ones place in the number 55.72
bogdanovich [222]
The digit in the tens place is 10 times bigger than the digit in the ones place
6 0
3 years ago
HELP NEEDED ASAP! Thanks :)
Arlecino [84]

Answer:

3

Step-by-step explanation:

First we must find the total boxes of pens

15 + 9 = 24

Then we can divide the total cost by the total number of boxes of pens

$72 / 24 boxes = 3

4 0
2 years ago
How many people can you serve with 6 pizzas if each pizza is 3/4 of a pizza?
3241004551 [841]
4 1/2 or 4.5 (which ever you prefer) 
Just multiply 6 by 3/4 for the answer.
7 0
3 years ago
What are the missing numbers pls do it in order!!! :)
grigory [225]

Answer:

12 30 and 50

Step-by-step explanation:

8 0
2 years ago
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