Answer:
-18 C°
Step-by-step explanation:
Warmed means add cooled means subtract
starting at -23 it warmed by 8 add 8
-15
it warmed by 3 more add 3
-12
then it cooled by 6 subtract 6
-18
4 because that is what's multiplied throughout
In Euclidean geometry, the sum of the measures of the interior anlges of a pentagon is 540°.
The sum of the measures of the interior angles of a pentagon would be different in spherical geometry because A.) THE SUM WOULD BE GREATER THAN 540°
Answer:
b. false
Step-by-step explanation:
when multiplying matrixes the number of columns of the first matrix must be equal as the number of rows of the second matrix, and since here matrix A has 4 columns but matrix B has 5 rows they can't be multiplied
Answer:
![a_n=\frac{-1}{2}a_{n-1}](https://tex.z-dn.net/?f=a_n%3D%5Cfrac%7B-1%7D%7B2%7Da_%7Bn-1%7D)
![a_1=2](https://tex.z-dn.net/?f=a_1%3D2)
Step-by-step explanation:
The recursive rule is a term defined in terms of other terms in the sequence.
The is a geometric sequence because it has a common ratio.
The common ratio can be found by dividing a term by previous term.
For example, all of these are equal:
![\frac{-1}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B-1%7D%7B2%7D)
![\frac{\frac{1}{2}}{-1}](https://tex.z-dn.net/?f=%5Cfrac%7B%5Cfrac%7B1%7D%7B2%7D%7D%7B-1%7D)
![\frac{\frac{-1}{4}}{\frac{1}{2}}](https://tex.z-dn.net/?f=%5Cfrac%7B%5Cfrac%7B-1%7D%7B4%7D%7D%7B%5Cfrac%7B1%7D%7B2%7D%7D)
They are all equal to
.
So we are saying:
![\frac{\text{term}}{\text{previous term}}}=\frac{-1}{2}](https://tex.z-dn.net/?f=%5Cfrac%7B%5Ctext%7Bterm%7D%7D%7B%5Ctext%7Bprevious%20term%7D%7D%7D%3D%5Cfrac%7B-1%7D%7B2%7D)
More formally:
.
Multiply both sides by
:
![a_n=\frac{-1}{2}a_{n-1}](https://tex.z-dn.net/?f=a_n%3D%5Cfrac%7B-1%7D%7B2%7Da_%7Bn-1%7D)
When doing recursive form, you need to state a term of the sequence (or more depending on the recursive form you have).
So the first term is 2.
So the full thing for the answer is:
![a_n=\frac{-1}{2}a_{n-1}](https://tex.z-dn.net/?f=a_n%3D%5Cfrac%7B-1%7D%7B2%7Da_%7Bn-1%7D)
![a_1=2](https://tex.z-dn.net/?f=a_1%3D2)