9514 1404 393
Answer:
sum = ∑[n=1,5] 4^(n-4)
Step-by-step explanation:
First of all, you need to be able to describe the n-th term.
Here, we have ...
term #: 1, 2, 3, 4, 5
value: 4^-3, 4^-2, 4^-1, 4^0, 4^1
That is, the exponent of 4 is 4 less than the term number. So, the n-th term is 4^(n-4). The sum of the 5 terms shown is then ...

Answer:
23/40 is a rational number
Step-by-step explanation:
an irrational number cannot be written as a fraction - with a finite end. An irrational number would be a repeating decimal
Answer:
The area of this figure is 24mm.
Step-by-step explanation:
4mm*3mm=12mm
1mm*6mm=6mm
3mm*4mm=12mm/2mm=6mm
6mm+6mm+12mm=24mm
Answer:
several designers created scale drowings of a new technology lab.