Answer:
Tn = 64-4n
Step-by-step explanation:
The nth term of an AP is expressed as:
Tn = a+(n-1)d
a is the common difference
n is the number of terms
d is the common difference
Given the 6th term a6 = 40
T6 = a+(6-1)d
T6 = a+5d
40 = a+5d ... (1)
Given the 20th term a20 = -16
T20 = a+(20-1)d
T20 = a+19d
-16 = a+19d... (2)
Solving both equation simultaneously
40 = a+5d
-16 = a+19d
Subtracting both equation
40-(-16) = 5d-19d
56 = -14d
d = 56/-14
d = -4
Substituting d = -4 into equation
a+5d = 40
a+5(-4) = 40
a-20 = 40
a = 20+40
a = 60
Given a = 60, d = -4, to get the nth term of the sequence:
Tn = a+(n-1)d
Tn = 60+(n-1)(-4)
Tn = 60+(-4n+4)
Tn = 60-4n+4
Tn = 64-4n
Answer:
10 is unbiased
11 is biased
Step-by-step explanation:
10 is unbiased
11 is biased
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Answer:
There is no function since there is no association between all the numbers
Step-by-step explanation:
If you were to put them in a graph they would be every where and make there be no function.
Answer:
4= -5v-1
5= 3x
6= 9y-6
7= h-20
8= 29w-17z
9= 8mn-2n+5m
Step-by-step explanation:
first three that you did were correct! Hope it helps!
