Answer:
77°
Step-by-step explanation:
103° + ∠1° = 180°
Answer:
90
Step-by-step explanation:
add it two times since it has been reduced by 50%
man I ain't good at maths so sorry if wrong answer
Answer:
parallel line theorem
Step-by-step explanation:
It would be because A and B are parallel and 1 and 2 are congruent which means that L and M are parallel as well
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.