Find the sum of a finite geometric sequence from n = 1 to n = 7, using the expression −4(6)n − 1.
111,325
526
782
-223,948

Step-by-step explanation:

The formula of a sum of terms of a gometric sequence:

a₁ - first term

r - common ratio

We have

Calculate a₁. Put n = 1:

Calculate the common ratio:

constant acceleration- a

constant velocity- c

no velocity or acceleration- b

explanation:

for body moving with a constant acceleration, the rate of change of displacement changes over time. this is proven by the increasing gradient of the curve (a) against time.

a body that is moving at constant velocity covers equal distances over equal periods of time, thus the straight line with a constant gradient c.

a stationary body   covers no displacement as time elapses. thus the flat line with   zero gradient.