alexandergonzalez38
17.09.2019 •
Mathematics
Acircle has center at –6 + 2i and a point on the circle at 4 + 26i. which of the following points is also on the circle?
–19 + 15i
–16 – 22i
6 + 16i
20 – 24i
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Ответ:
Option B (-16-22i)
Step-by-step explanation:
Given : A circle has a center -6+2i and a point is 4+26i
To find : which point is also on the circle
Solution : First we find the radius(r) of the circle with center(x,y)=(-6,2)
and a point (h,k)=(4,26)
Equation of the circle =
where,
Now we check one by one that which point satisfy the equation
New equation :
A) point –19 + 15i = (-9,15)
B) –16 – 22i =(-16,-22)
C) 6 + 16i =(6,16)
D) 20 – 24i=(20,-24)
Therefore, Option B only satisfy the required equation
Hence, Option B (-16-22i) is the answer.
Ответ:
132 would be rounded to 130.
Step-by-step explanation: