3 years ago

ASAP I only have 3-minute pls answer

Mathematics

2 answers:

Afina-wow [57]3 years ago

7 0

Answer:

457.2 so b

Step-by-step explanation:

natulia [17]3 years ago

7 0

Answer:

B, I had the same question before and i think its B

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If (-1,4) and (3,-2) are end points of diameter of the circle, then the equation of the circle is

Volgvan

Answer:

If you've more doubts you can ask :)

Step-by-step explanation:

If the centre of a circle is (a, b) and radius r, then the equation of the circle is :

$(x - x)^2 + (y-b)^2 = r^2$

First we will find the centre, (a , b):

$a = \frac{3+(-1)}{2} = \frac{2}{2} = 1\\\\b = \frac{-2 + 4}{2} = \frac{2}{2} = 1$

Find radius:

$Radius, r = \frac{Diameter}{2}$

Diameter is the distance between (-1, 4) and (3, -2)

$diameter = \sqrt{(x_2 - x_1)^2 +(y_2-y_1)^2} \\\\$

$= \sqrt{(3-(-1)^2 + (-2-4)^2} \\\\=\sqrt{16 + 36}\\\\=\sqrt{52}\\\\=\sqrt{4 \times 13}\\\\=2\sqrt{13} \ units$

Therefore , $r = \frac{2 \times \sqrt{13} }{2} = \sqrt{13} \ units$

Equation of the circle is :

$(x - 1)^2 +(y-1)^2 = 13$

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3 years ago

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MaRussiya [10]

Answer: what do need help on

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Natalie walked 3/5 mile in 1/2 hour . how fast did she walk in miles per hour

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Find the precent of each number.

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Insert parentheses to make the statement true 21-8-6=7

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(21-8)-6=7

and that's it

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