Answer:
= 34.5
Step-by-step explanation:
The n th term of an arithmetic sequence is
= a₁ + (n - 1)d
where a₁ is the first term and d the common difference
Given = 121.5, then
a₁ + (69 × 1.5) = 121.5
a₁ + 103.5 = 121.5 ( subtract 103.5 from both sides )
a₁ = 18
Hence
= 18 + (11 × 1.5) = 18 + 16.5 = 34.5
12th term = 34.5
l = a + (n-1)*d
d = 1.5
70th term = 121.5
a + 69 * 1.5 = 121.5
a + 103.5 = 121.5
a = 121.5 - 103.5
a = 18
12 th term = 18 + 11 * 1.5 = 18 + 16.5 = 34.5
Answer is 38
20 -(-3) + 15
20 + 3 + 15
38
I THINK ITS THE 3rd on
you see the part where it says 6x8 then 6x3 and he part where it says 6x4 she didnt add the 2
Answer is A
subtract 15 1/4 and 2 2/3
Poste uma foto do problema plss