Answer: The answer is: " 2 " .
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→ Kami has read the book "<u> 2 (two) </u>" times.
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Step-by-step explanation:
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Let "J" represent the number of times julia has read the book.
Let "K" represent the number of times Kami has read the book.
J = 6 ;
J = 3K ;
Solve for "K" ;
J = 6 = 3K ;
→ 6 = 3K ;
↔ 3K = 6 ;
Divide each side of the equation by "3" ;
to isolate "K" on one side of the equation; & to solve for "K" :
→ 3K / 3 = 6 / 3 ;
to get:
K = 2 .
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The answer is: " 2 " .
→ Kami has read the book "<u> 2 (two) </u>" times.
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Answer: It would be $4.38
Step-by-step explanation: If you divide the $5 by .8 it will give you what 1/8 of it would be then you multiply it by 7 to get the 7/8 of it.
The answer is 3. This is because the perimeter is 30 so 5x+5x+x-3+x-3 = 30. Thus you have 12x-6=30 so x = 3
Answer:
60480
Step-by-step explanation:
This question has to do with permutations. A permutation is used to find the number of possible outcomes, assuming order matters. In this case, n=9 and r=6. This is written as 
which equals 
. Then, plug this into a calculator to get 60480.
Answer:
a. z-score = -1.2
b. The age 23 years old is -1.2 standard deviations below the mean
c. The age is not unusual
Step-by-step explanation:
a. Transformation to z-score
Mathematically;
z-score = (x - μ)/σ
where σ and μ are the standard deviation and the mean respectively.
From the question, x = 23, μ = 27.2 and σ = 3.5
Let’s put these into the equation;
z-score = (23-27.2)/3.5 = -1.2
b. Interpretation of result
The interpretation is that 23 years old is -1.2 standard deviations below the mean
c. Determination
The age is not unusual. This is because any z-value below -2 or above 2 is considered unusual
-1.2 is above -2 and thus it is not unusual
