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Nostrana [21]
3 years ago
7

Find the first four terms of the sequence an = 5n-1.​

Mathematics
1 answer:
viva [34]3 years ago
3 0

Answer:

let's see what to do buddy...

Step-by-step explanation:

" First four terms " means :

t(1) , t(2) , t(3) , t(4)

t(1) = a(1) = 5(1) - 1 = 5 - 1 = 4 \\ t(2) = a(2) = 5(2) - 1 = 10 - 1 = 9 \\ t(3) = a(3) = 5(3) - 1 = 15 - 1 = 14 \\ t(4) = a(4) = 5(4) - 1 = 20 - 1 = 19 \\  \\ t(1) = 4 \\ t(2) = 9 \\ t(3) = 14 \\ t(4) = 19

So the first four terms

are : 4 , 9 , 14 , 19

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The anwser would be -15  
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larry ran 220 meters farther that leigh ran. leigh ran 2.3 kilometers. how many kilometers did larry run?
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12. What percent of 60 is 12? Show your work.
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The dot plot displays the number of marshmallows added to hot cocoa by several kids. What is the MAD of the data represented in
Pie

  Mean absolute deviation (MAD) of the data set indicates the average distance of all elements from mean of the data set.

MAD of the data represented by dot plot in the picture will be Option A.

Elements in the given dot plot are,

3, 4, 5, 5, 5, 5, 5, 5, 6, 7

Steps to be followed for the mean absolute deviation of this data set.

  • Find the mean of the data set
  • Find the absolute distance of each element from the mean
  • Find the average distance of all the elements which will be MAD of the data set.

Step - 1 :

Mean of the data set = \frac{\text{Total of the data}}{\text{Total number of elements}}

                                   = \frac{3+4+5+5+5+5+5+5+6+7}{10}

                                   = \frac{50}{10}

                                   =5 (As shown on the dot plot)

Step - 2 :

Absolute distance of each element from the mean of the data set,

3 - 5 = |-2| = 2

4 - 5 = |-1| = 1

5 - 5 = 0

5 - 5 = 0

5 - 5 = 0

5 - 5 = 0

5 - 5 = 0

5 - 5 = 0

6 - 5 = 1

7 - 5 = 2

Step - 3 :

Average of the absolute distance = \frac{2+1+0+0+0+0+0+0+1+2}{10}

                                                        = \frac{6}{10}

                                                        = 0.6

          Therefore, Option A will be the correct option.

Learn more,

brainly.com/question/24378074

4 0
3 years ago
If sin Θ = 5/6 , what are the values of cos Θ and tan Θ?
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For the answer to the question above, I'll provide a solution to my answer below
sin²θ + cos²θ = 1 

<span>so, cos²θ = 1 - (5/6)² => 11/36 </span>

<span>=> cosθ = ±√11/6 </span>

<span>Also, tanθ = sinθ/cosθ => (5/6)/(±√11/6) </span>

<span>i.e. tanθ = ±5/√11 
</span>I hope my answer helped you. Feel free to ask more questions. Have a nice day!
8 0
3 years ago
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