mroueh21
28.06.2019 •
Mathematics
Im stupid and just need these 2 questions ! will give brainliestthe ordered pairs model an exponential function, where j is the function name and e is the input variable.{(1, 10), (2, 50), (3, 250), (4, 1250)}what is the function equation in sequence notation? enter your answer in the box.je=what is the explicit rule for the sequence? 13, 10.5, 8, 5.5, 3, 0.5, an=15+2.5n an=15.5+2.5n an=15−2.5n an=15.5−2.5n
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Ответ:
f(n) = 10 * 5^(n-1)
an = 15-2.5n
Step-by-step explanation:
{(1, 10), (2, 50), (3, 250), (4, 1250)}
The formula for a geometric sequence is
an = a1 * r ^(n-1)
where a1 is the first term and r is the rate in which it increase
a1 =10
r = 5, each term goes up by a factor of 5
50/10 = 5
250/50 = 5
etc
f(n) = 10 * 5^(n-1)
What is the explicit rule for the sequence?
13, 10.5, 8, 5.5, 3, 0.5, ...
For an arithmetic sequence the formula is
an = a1 + d(n-1)
where a1 is the first term and d is the common difference
a1= 13 and d = -2.5
10.5 -13 = -2.5
8. - 10 = -2.5
etc
an = 13 - 2.5 ( n-1)
Simplifying
an = 13 -2.5n + 2.5
an = 15-2.5n
Ответ:
Same
Step-by-step explanation:
Brainliest pls