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riadik2000 [5.3K]
3 years ago
6

What is rational number and arithmetic number​

Mathematics
1 answer:
Oduvanchick [21]3 years ago
5 0

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Here, “p” is a numerator and “q” is a denominator. The examples of rational numbers are 6/5, 10/7, and so on. The rational number is represented using the letter “Q”. Like real numbers, the arithmetic operations, such as addition, subtraction, multiplication, and division are applicable to the rational numbers.

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According to the WHO report, girls who are 2-years old have a mean head circumference of 47.18cm with a standard deviation of 1.
Verdich [7]

Answer:

1. z = -1.91429

The z score tells us that the head circumference of the girl with the down syndrome ( 44.5 cm) is 1.91429 standard deviations below the mean or average head circumference

2. 2.7792%

Step-by-step explanation:

1. Relative to the WHO data, what is this girls z-score?

z score formula is:

z = (x-μ)/σ, where

x is the raw score = 44.5 cm

μ is the population mean = 47.18cm

σ is the population standard deviation = 1.40cm

z = 44.5 - 47.18/1.40

z = -1.91429

What does the z score tell us?

The z score tells us that the head circumference of the girl with the down syndrome ( 44.5 cm) is 1.91429 standard deviations below the mean or average head circumference

2. Using the WHO data in a normal model, what percentage of the girls has a head circumference that is smaller than the girl with Down's Syndrome?

z score = -1.91429

Probability value from Z-Table:

P(z =-1.91429) = P(x<44.5) = 0.027792

Converting to percentage = 0.027792 × 100

= 2.7792%

6 0
2 years ago
There are 240 blocks and they take half of the blocks
natulia [17]
There are 120 blocks left.
4 0
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Anne runs 5 6 of a mile every day. How many days would she have to run to reach a total of 35 6 miles?
matrenka [14]
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It would take her 7 days to run 35/6 miles.

Hope this helps :)
4 0
2 years ago
Fruit basket is made with apple and oranges.the ratio of apples to oranges in a fruit basket is 2 to 3.if there are 45 pieces of
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3 years ago
What is the solution of the inequality shown
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Answer:

y = 1/2

Step-by-step explanation:

;)

8 0
2 years ago
Read 2 more answers
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