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Slav-nsk [51]
3 years ago
13

2 3/4+12 1/2 = what is it

Mathematics
2 answers:
natta225 [31]3 years ago
8 0
An equation
what else could it be?
Andru [333]3 years ago
7 0

Answer: 15\frac{1}{4}

Step-by-step explanation:

2\frac{3}{4}+12\frac{1}{2}

Step 1: Add the whole numbers

2 + 12 = 14

Step 2: Combine fractions

\frac{3}{4} + \frac{1}{2}

LCD

2 \times 4 = 4

Add numerators

3+1 = 5

= \frac{5}{4}

14+\frac{5}{4}

Step 3: Add whole numbers

14+1=15

Step 4: Combine the remaining

15\frac{1}{4}

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2664.3

Step-by-step explanation:

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Is the data set approximately periodic?
wolverine [178]

Answer:

Option: C is the correct answer.

       C. Periodic with period 4 and amplitude of about 15.

Step-by-step explanation:

We are given the table of values as:

Hour             1 -- 2 -- 3 --  4 --  5 -- 6 -- 7 -- 8 -- 9 -- 10 -- 11

Number       24-41-10-32-26-38-9-31-25-39-12

of boats

As we could see that after every 4 value the values are approximately repeating.

Hence,the data set is approximately periodic.

Also, the amplitude is calculated as:

Average of the maximum and minimum value of each set

We divide the set into 3 sets as follows:

 Hour                       1           2           3            4

Number of boat      24        41          10           32

Here we have amplitude as:

         (41-10)/2=15.5

 Hour                       5           6           7            8

Number of boat      26        38           9           31

  Amplitude is:

          (38-9)/2=14.5

Hour                       9           10          11            12

Number of boat      25        39          12      

            Amplitude is:

            (39-12)/2=13.5

Hence, we see that the amplitude is about 15.

   

4 0
3 years ago
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