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Alborosie
2 years ago
5

Step 3: Displaying numerical data in dot plots, and describing and analyzing the data.

Mathematics
1 answer:
AlexFokin [52]2 years ago
3 0

Answer:The mode if 5, because 5 occurs 8 times, which is more than any other numbers occurring more than once. The median is 6, and this is because when you line up the numbers in order and cross them off to find the middle number, it is 6. I rounded to the mean to about 6.4. I got this by adding all of the numbers up, or by doing 12 + 40 +18 +7, etc, and got the total of 165. Because there is a total of 26 data points, I divided those numbers and got 6.3461, which ends up rounding to 6.4.

Step-by-step explanation:

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1/2x+5=10 what is the number of the variable
ki77a [65]
I think what your asking for is that x=10
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2 years ago
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Given that f(x) = x + 3<br> a) Find f(2)
Nataly_w [17]

{ \qquad\qquad\huge\underline{{\sf Answer}}}

Here we go ~

In the above question, it is given that :

\qquad \sf  \boxed{ \sf f(x) =  \frac{x + 3}{2} }

A.) Find f(2) :

\qquad \sf  \dashrightarrow \: f(2) =  \dfrac{2 + 3}{2}

\qquad \sf  \dashrightarrow \: f(2) =  \dfrac{5}{2}

or

\qquad \sf  \dashrightarrow \: f(2) = 0.5

B.) Find { \sf {f}^{-1}(x) } :

\qquad \sf  \dashrightarrow \: let \: y = f (x)

so, we can write it as :

\qquad \sf  \dashrightarrow \: y =  \dfrac{x + 3}{2}

\qquad \sf  \dashrightarrow \: 2y = x + 3

\qquad \sf  \dashrightarrow \: x = 2y - 3

Now, put x = { \sf {f}^{-1}(x) }, and y = x and we will get our required inverse function ~

\qquad \sf  \dashrightarrow \: f {}^{ - 1}(x) = 2x- 3

C.) Find { \sf {f}^{-1}(12) } :

\qquad \sf  \dashrightarrow \: f {}^{ - 1}(12) = 2(12)- 3

\qquad \sf  \dashrightarrow \: f {}^{ - 1}(12) = 36- 3

\qquad \sf  \dashrightarrow \: f {}^{ - 1}(12) = 33

7 0
9 months ago
Use the formula B = p(1.08)n to find the balance B (in dollars and cents) for a principal p invested at a compound interest rate
aalyn [17]

Answer:

Option D. \$73.47  

Step-by-step explanation:

In this problem

we have    

B=P(1+r)^{t}  

where  

B is the Final Investment Value   or a Balance

P is the Principal amount of money to be invested  

r is the rate of interest  in decimal

t is Number of Time Periods  

in this problem we have  

t=5\ years\\ P=\$50\\ r=0.08  

substitute in the formula above  

B=\$50(1+0.08)^{5}=\$73.47  

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3 years ago
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myrzilka [38]
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