Tn=-2n+19
Step-by-step explanation:
Well in south africa we use Tn
Tn=a+(n-1)d
a=is the first term in the sequence which is 17
d=is the the difference between the terms which is - 2
Tn=17+(n-1)(-2)
Tn=17-2n+2
Tn=-2n+19
Answer:
is the expression we determine after following the steps 'Start with x and double it'.
Step-by-step explanation:
As we have to determine the expression based on a mentioned series of steps.
The series of steps:
- start with x and double it.
As the double value of x would be 2x, therefore, the required expression would be: 2x
Therefore,
is the expression we determine after following the steps 'Start with x and double it'.
Answer:
b = 11
Step-by-step explanation:
b + 7 + 12 = 30
b + 19 = 30
b = 11
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