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3 years ago

Find the nth term of this quadratic sequence 4 7 12 19 28

Mathematics

1 answer:

Elis [28]3 years ago

8 0

Answer: 84

Step-by-step explanation:

from 4 to 7 , they added 3

from 7 to 12 they added 5

from 12 to 19 they added 7

from 19 to 28 they added 9

3, 5, 7, 9.... They are simply adding odd numbers to each number. So after 9 would be 11, so you add 11 to 28 and get 39, and so on...

39 + 13= 52

52 + 15 = 67

67 + 17 = 84

84 is the ninth term, so that is your answer.

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3 years ago

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Neko [114]

Answer:true

Step-by-step explanation:

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3 years ago

What is the value of -2xy if x = -1 and y = 6? 8 12 26 -12

Elena L [17]

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3 years ago

What is the GFC 3x^2-9x-120

lara31 [8.8K]

Answer: 3

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Step-by-step explanation:

6 0

3 years ago

Need help ASAP!!!!!!

Mnenie [13.5K]

Answer:

Mean = 2.95

Median = 3

Step-by-step explanation:

The mean of the number of visits of 40 adults to the gym is

$\dfrac{0\cdot 4+1\cdot 3+2\cdot 12+3\cdot 5+4\cdot 8+5\cdot 5+6\cdot 2+7\cdot 1}{40}=\\ \\=\dfrac{3+24+15+32+25+12+7}{40}=\dfrac{118}{40}=2.95$

The median of the data is the average number between 20th and 21th terms (because 40 is even number, so the middle term is the average between two middle terms).

20th term = 3 visits

21th term = 3 visits

Hence, median is 3 visits

6 0

3 years ago