Answer:
see explanation
Step-by-step explanation:
the n th term of an arithmetic sequence is
= 
+ (n - 1)d
given = 3 and 
= 10, then
= 3 + d = 10 ⇒ d = 10 - 3 = 7
= 3 + 7(n - 1) = 3 + 7n - 7 = 7n - 4
the sum to n terms of an arithmetic sequence is
= 
[2 + (n - 1)d ]
= [(2 × 3) + 7(n - 1) ]
= (6 + 7n - 7 )
= (7n - 1)
= 
n² - 
n
Answer:
Step-by-step explanation:
edge 2020
Answer:
175.26 centimeters
Step-by-step explanation:
Answer:
Step-by-step explanation:
<u>Given:</u>
<u>Solving for x:</u>
Use the slope-intercept form to find the slope and y-intercept. The slope-intercept form is y=mx+b y = m x + b , where m m is the slope and b b is the y-intercept.
