Answer:
Step-by-step explanation:
Find the sum of the first 42 terms of the following series, to the nearest integer.
2,7,12
Solution
The sum is given by
SUM_n=n/2*(a_1+a_n)
a_n=a_1+(n-1)d
a_1=2, n=42, d=5
The 42nd term is therefore given by
a_42=2+(42-1)5=207
SUM_42=42/2*(2+207)=21*209=4389
The sum of the first 42 terms of the series, therefore, is 4389
Remember The domain is always the left side of the relation. The range is always in the right.
Answer is C
Answer:
tyrnnnnnfjj
Step-by-step explanation:
The discriminant of this equation is 49. The solutions for this equation are x=2 and x=-
I hope that helps.
