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olga_2 [115]
3 years ago
6

Does anyone know this ?? i’m super confused :(

Mathematics
1 answer:
LuckyWell [14K]3 years ago
8 0
Need some Some big brain so here take some
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Find the formula for the nth term of the arithmetic sequence -39, 61, 161, 261, ...
maksim [4K]
<h3>Given that it is arithmetic</h3>

d = a_{2} - a_{1} = 61 - ( - 39) = 100

a_{n} = a_{1} + (n - 1)d \\ a_{n} = - 39+ 100 (n - 1) \\ a_{n} =  - 39 + 100n - 100 \\ a_{n} =  - 139 + 100n

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1 year ago
The radius of a circle is 3 centimeters. What is the circle's circumference?
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It should be 18.84. To find the circumference of a circle you would times the diameter by pi or 3.14 but since its the radius you would need to times pi (by the radius and times that by 2. so 3 times 2 is 6 and 6 times 3.14 is 18.84
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3 years ago
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Which of the following is a Riemann Sum used to estimate?
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3 years ago
5.4 divided 0.12 show work on how you got the ansswer
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5.4 divide by 0.12 equals 45
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