The formula for the sum of n terms in an arithmetic progression is:
S = n/2 * (2a + (n-1)d)
Here, the common difference, d, is 8 and the first term, a, is 1. Substituting these into the formula, we get:
S = n/2 * (2*1 + 8(n - 1))
S = n + 4n² - 4n
S = 4n² - 3n
The answer is A.
Answer:
a 40, aka a failing grade ( do ur test :) )
Step-by-step explanation:
I believe that a flat surface continuing in all directions is called a plane.
The answer is m= -13
because 32-45=-13
Answer:
10.5
Step-by-step explanation:
225÷21.50
=10.46511
=10.5(3sf)
