Answer:
z=i+2
,
z=i-2
Step-by-step explanation:
Remember that the quadratic equation has the complex solutions (this is the quadratic formula).
Apply this with a=1, b=-2i and c=-5 to get:
. Then the solutions are
and
It isn't necessary to use De Moivre's formula.
Answer:
I believe it's "Multiplication Property of Equality"
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Use the multiplier 1.055
final = original x multiplier^n
where 'n' is the number of years
Sub the values in
final = 700 x 1.055^7
final = 1018.27
Subtract the values:
1018.27 - 700 = 318.27
Thus, he earns more than $275
He earns $43.27 more
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Answer:
Hours are equal: 7.2
Cost of service are equal: 51.4
Step-by-step explanation:
<u>Happy Paws:</u>
y = 4.5h + 19
<u>Woof Watchers:</u>
y = 5.75h + 10
<u>To solve for the hours are equal:</u>
y = 4.5h + 19
y = 5.75h + 10 (Multiply by -1)
y = 4.5h + 19
-y = -5.75h - 10
0 = -1.25h + 9
-9 = -1.25h
h = 7.2
<u>To solve for when the services are equal:</u>
y = 4.5h + 19
y = 4.5(7.2) + 19
y = 32.4 + 19
y = 51.4
1)8*3=24
(24)*7=8*n
2)(24)*7=8*n
168=8*n
3)168=8*n
8*n=8n
4)168=8n
168 divided by 8 equals 21
8n divided by 8 equals n
Final Solution: 21=n