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Oksanka [162]
3 years ago
13

an octagon has sides that all have a length of y. Write a simplified algebraic expression for the perimeter of the octagon in te

rms of y.
Mathematics
1 answer:
padilas [110]3 years ago
5 0

Answer = 8y

Step-by-step explanation:

if an octagon has 8 sides and each side is = to y then the total side length in the primiter is = to 8sides times y or 8y

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The edges of the diameter of a circle are at (-1,2) and (3,-1). Write the equation of the circle in general form.
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(x-1)²+ (y-0.5)²=6.25

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<u>The standard form of equation of a circle is;</u>

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<u>Finding the mid-point of the given points</u>

(-1,2) and (3,-1)⇒midpoint will be 1/2(x₁+x₂) , 1/2(y₁+y₂)

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<u>Finding the radius r; the distance from the center to either of the given two points</u>

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d=√4+2.25⇒√6.25⇒2.5

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(x-1)² + (y-0.5)²=2.5²

(x-1)²+ (y-0.5)²=6.25

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