Answer:
6554
Step-by-step explanation:
The sequence 2, -8, 32, -128 has a first term (a1) of 2 and a common ratio (r) of -8/2 = -4. The sum of n terms is given by ...
Sn = a1·(r^n -1)/(r -1)
For your sequence, the sum of 7 terms is ...
S7 = 2·((-4)^7 -1)/(-4-1) = 2(-16384/-5) = 6554
The sum of changes after the 7th day is 6554.
Answer:
16x^4+32x^3+24x^2+8x+1
Step-by-step explanation:
(2x+1)^4
(2x+1)*(2x+1)*(2x+1)*(2x+1)
Answer:
y intercept: -2
Step-by-step explanation:
hope this helps :)
Answer:
10m
Step-by-step explanation:
We can set up an equation to solve this.

This equation can be created since we are given two similar sides of both triangles.
Now, cross multiply and simplify to solve for
.

The answer is sensible, and if you put 10 into the same equation from earlier, you will see that it is accurate.
Therefore, the value of
is 10m.