Sin+cos=90
49+cos=90
cos=41
Answer:
The 12000 City would become 22,986 people, while the 230,000 city would become a population of 124,223.
Step-by-step explanation:
1st Part:
=12000⋅(0.026000000000000002⋅25)
=12000(2.718281828459045)(0.65)
=22986
2nd Part:
=230000⋅(−0.044000000000000004⋅14)
=230000(2.718281828459045)(−0.616)
=124223
A 30 hours per year
B 30X(100+20)%=36 per year
1.5 year later is 5.5 years
5.5X36=198 hours
ANSWER
c.

EXPLANATION
The exponential form of complex numbers is given by;

The given complex number in polar form is:

We have r=5 from the question and

We substitute these values to obtain the exponential form:

The correct answer is C