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:
The answer is false
Step-by-step explanation:
" An event is certain if its probability is 100% "
Statistics is about probability of occuring of an event; you cannot buy 100% certainty. Statistics is about managing risk.
Hence the following given statement is not correct that: In statistics, results are always reported with 100% certainty.
Hence the statement is FALSE.
The GCF of 88 and 36 is 4 because 22 × 4 = 88 and 9 × 4 = 36.
To find the number of half lives divide the total number of days by the number of days for 1 half live:
1104 / 138 = 8
There are 8 half lives.
To find the total amount left multiply the starting amount by 1/2 to the 8th power:
38 * 0.5^8 = 0.148 = 0.15 grams
The answer is the last one.
Answer:
8 Faces
Step-by-step explanation:
The Euler’s formula is:
V-E+F=2
Where V is number of vertices, E is number of edges and F is number of faces.
In our example, E=20, V=30, so we have:
30-20+F=2
10-F=2
F=8
