My guess is D but dont consider it as answer.
Answer:
a = 90
b = 28
c = 68
d = 22
Step-by-step explanation:








Answer:
Step-by-step explanation:
−7(−1+7k)−3(8k−1)
Distribute:
=(−7)(−1)+(−7)(7k)+(−3)(8k)+(−3)(−1)
=7+−49k+−24k+3
Combine Like Terms:
=7+−49k+−24k+3
=(−49k+−24k)+(7+3)
=−73k+10
Answer:
=−73k+10

By DeMoivre's theorem,

which would here mean that

as required.
Answer:
supplementary
Step-by-step explanation: