Answer:
70
Step-by-step explanation:
= First term =
= Common difference =
= Number of terms = 20
Sum of arithmetic progression is given by
The sum of the first 20 terms of the arithmetic sequence is 70.
Answer:
a variable
Step-by-step explanation:
a variable.
Answer:
exact form: x= 11/2
Decimal Form
X= 5.5
Mixed form
X= 5 1/2
Step-by-step explanation:
put 3 into 15 than put 6 into 15 then the answer u get from putting 6 into 15 subtract that by 2 and the answer u get from the u multpy the answer that u got from putting 3 into 15 together