<u><em>Answer: -2/5+1/5i</em></u>
Explanation:
complex rule.
(-3*7+1*1)+(1*7-(-3)*1)i/7²+1² ← as the fractions
then refine and rewrite the problem down.
-20+10i/50 ← as the fractions shown.
-20+10i/50=-2+i/5
you can also rewrite the problem down in standard complex form.
-2+i/5=-2/5+1/5i
<u><em>=-2/5+1/5i</em></u>
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Answer:
135
Step-by-step explanation:
135 by 3 is 45
by 5 is 27
Answer: 
Step-by-step explanation:
Given

GCF or HCF of the two is the highest common factor

It is clear GCF is 
Answer:
r = 5
Step-by-step explanation:
(r + 8)^2 = r^2 + 12^2
r^2 + 16r + 64 = r^2 + 144
16r = 80
r = 5
Answer:
180 seats on each car of the train.
Step-by-step explanation:
30 × 6 = 180
rows of seats × seats in each row = seats on each car of the train