Answer:
= 1
Step-by-step explanation:
The n th term of an arithmetic progression is
= a + (n - 1)d
where a is the first term and d the common difference
use the 9 th term and 7 th term to find a and d
= a + 8d =
→ (1)
= a + 6d =
→ (2)
Subtract (2) from (1) term by term
2d =
⇒ d = 
Substitute this value into (2) and solve for a
a +
= 
a =
-
= 
Hence
=
+
= 1
Answer:
the 2 is the ones 2 means 2
Step-by-step explanation:nothing
Answer:
the are perpendicular to each other (option B)
Answer:
Step-by-step explanation:
<u>C. </u>
- 5/8x + 25 = 3/8x + 15 + 1/4x
- 5/8x + 10 = 3/8x + 2/8x
- 5/8x + 10 = 5/8x
- 10 = 0
Answer:
??
Step-by-step explanation: