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Wittaler [7]
3 years ago
5

What two variables are used most often in 2-variable equations?

Mathematics
1 answer:
MAXImum [283]3 years ago
8 0
I believe it is x and y
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Solve for x.<br><br> x+16, 4x-5
r-ruslan [8.4K]

Answer:

if they are being equaled to each other, then x=7

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Equivalent ratios 5:22=_:66
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15

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5:22=15:66, simply multiply 3 in the right hand side

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Hazel traveled 796 meters by foot. She traveled 3,486 meters by car and 56,975 meters by hot air balloon. How many meters did Ha
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61,257

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Admission to a car show costs $5 for each ticket. After selling only 20 tickets, they decided to lower the price to $3 each. If
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determine the equation of the circle if its center is (8,-6) and which passes through the points (5,-2).
ser-zykov [4K]

Answer:

(x - 8)² + (y + 6)² = 25

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k ) are the coordinates of the centre and r is the radius

Here (h, k ) = (8, - 6 ) , then

(x - 8)² + (y - (- 6))² = r² , that is

(x - 8)² + (y + 6)² = r²

The radius is the distance from the centre to a point on the circle

Calculate r using the distance formula

r = \sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2    }

with (x₁, y₁ ) = (8, - 6 ) and (x₂, y₂ ) = (5, - 2 )

r = \sqrt{(5-8)^2+(-2-(-6))^2}

  = \sqrt{(-3)^2+(-2+6)^2}

  = \sqrt{9+4^2}

  = \sqrt{9+16}

   = \sqrt{25}

   = 5

Then equation of circle is

(x - 8)² + (y + 6)² = 5² , that is

(x - 8)² + (y + 6)² = 25

6 0
2 years ago
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