Mathematics, 08.06.2020 06:57 ehensl06
Type the correct answer in each box.
A circle is centered at the point (-7,-1) and passes through the point (8, 7).
The radius of the circle is
units. The point (-15,
) lies on this circle.
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Answer from: kcnawlay170
17 units
Step-by-step explanation:
The radius r is the distance from the centre of the circle to a point on it.
To calculate r use the distance formula
r = √ (x₂ - x₁ )² + (y₂ - y₁ )²
with (x₁, y₁ ) = (- 7, - 1) and (x₂, y₂ ) = (8, 7)
r = 
= 
= 
= 
= 17
Answer from: Quest
46.2+112.3
step-by-step explanation:
Answer from: Quest
Iknow one of the answers is a and maybe b but not 100% sure about b
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