Answer:
I think it is question 2, B
Answer:
391
Step-by-step explanation:
(23 x 10) + (23 x 7) =
230 + 161 =
391
Hope this helps! Please mark as brainliest.
Answer:
AT = 8
Step-by-step explanation:
Using the sine ratio in the right triangle
and sin45° = 
sin45° =
=
= 
Multiply both sides by AT
AT × sin45° = 8, that is
AT ×
= 8
Multiply both sides by 
AT = 8
If each years cumulate an increase of 1100 dollars, then the cost after 22 years will be the base cost (27000) plus 22 increases (22*1100), for a total of

This relates to arithmetic series as follows: a series is arithmetic if, given a starting element
, every next element is given by adding a fixed number, called common difference,
. So, the first terms are
So, you can see that the element
is obtained by adding n times the common ratio to the starting element.
Since the element
represents the cost after n years, we are interested in the element

As we had already calculated.
0+12, 11+1, 4x3, 6x2, etc.