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ddd [48]
3 years ago
5

The general form of the equation of a circle is Ax2 + By2 + Cx + Dy + E = 0, where A = B 0. If the circle has a radius of 3 unit

s and the center at (0, 4), which set of values of A, B, C, D, and E correspond to the circle?
A.A = 0, B = 0, C = 2, D = 2, and E = 3
B.A = 1, B = 1, C = 8, D = 0, and E = 9
C.A = 1, B = 1, C = 0, D = -8, and E = 7
D.A = 1, B = 1, C = -8, D = 0, and E = 0
E.A = 1, B = 1, C = 8, D = 8, and E = 3
Mathematics
2 answers:
Lynna [10]3 years ago
8 0
The correct answer is b.
notsponge [240]3 years ago
5 0
Ax^2 + By^2 + Cx +Dy + E = 0
radius = 3
standard form of the circle is
(x-a)² + (y-b)² = r², where (a,b) is the center, and r the radius
(x-0)^2 + (y-4)^2 = 9
x^2 + y^2 - 8y + 16 -9 = 0
x^2 + y^2 - 8y + 7 = 0
A=1, B=1,C= 0, D= -8, and E = 7

answer is
<span>C.A = 1, B = 1, C = 0, D = -8, and E = 7</span>
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The fourth one

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Answer:

Each hiker receives 7 ounces of trail mix

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8 0
2 years ago
The amount of chlorine in a swimming pool varies directly with the volume of water. the pool has 2.5 milligrams of chlorine per
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Answer:

Find out the  how much chlorine is in the pool .

To prove

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3 0
2 years ago
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for the opening day of a carnival, 800 admission tickets were sold. The receipts totaled $3775. Tickets for children cost $3 eac
zloy xaker [14]
Total tickets sold  = 800
Total revenue = $3775

Ticket costs:
$3  per child,
$8  per adult,
$5 per senior citizen.

Of those who bought tickets, let
x =  number of children 
y = number of adults
z = senior citizens

Therefore
x + y + z = 800                   (1)
3x + 8y + 5z = 3775           (2)

Twice as many children's tickets were sold as adults. Therefore
x = 2y                                (3)

Substitute (3) into (1) and (2).
2y + y + z = 800, or
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Substtute (4) nto (5).
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z = 800 - 3y = 125
From (3), obtain
x = 2y = 450

Answer:
The number of tickets sold was:
450 children,
225  adults,
125 senior citizens.
6 0
3 years ago
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ExtremeBDS [4]

Answer:

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Step-by-step explanation:

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