b = sin of angle B times length of c
b = 24*sin(62) = 21.1907
= 21.2
answer is A
No, you do not have to line up the decimals.
Answer B is correct. She forgot to use a variable for 1.49. The correct equasion would be:
Answer:

Step-by-step explanation:
A = (-123)+77+(-257)+23-43
A = -46+(-257)+23-43
A = -303+23-43
A = -280-43
A = -323
Hope this helps
Answer:
a
Step-by-step explanation: