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ElenaW [278]
3 years ago
8

Which defines a circle?

Mathematics
2 answers:
jarptica [38.1K]3 years ago
7 0

Answer:

Circle is a plane region bounded by by a line that lies at a uniform distance from a fixed point.

Step-by-step explanation:

Circle is a plane figure which is formed by the locus of a point which is at a fixed distance from a fixed point called center and the periphery of the figure is called circumference. The distance between any point on the periphery and the center is called radius of the circle.

Diameter is twice the length of the radius and it is the largest line segment that can be drawn between any two points on the circumference.

Any line segment connecting any two points on the periphery of the circle is called a chord, diameter is the largest chord.

Any line passing through any two points on the circumference of a circle is called a secant.

Any line passing through any one point on the circumference of a circle is called a tangent.

Mila [183]3 years ago
3 0

Answer:

a round plane figure whose boundary (the circumference) consists of points equidistant from a fixed point (the center).

Step-by-step explana

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X2 - 7x + 9 =0 please leave answer in surf form and simplify ​
777dan777 [17]

Answer:

x = \frac{7}{2} ± \frac{\sqrt{13} }{2}

Step-by-step explanation:

Given

x² - 7x + 9 = 0 ( subtract 9 from both sides )

x² - 7x = - 9

Solve using the method of completing the square

add ( half the coefficient of the x- term)² to both sides

x² + 2( - \frac{7}{2} )x + \frac{49}{4} = - 9 +

(x - \frac{7}{2} )² = \frac{13}{4} ( take the square root of both sides )

x - \frac{7}{2} = ± \sqrt{\frac{13}{4} } = ± \frac{\sqrt{13} }{2} ( add

x = \frac{7}{2} ± \frac{\sqrt{13} }{2} = \frac{7+/-\sqrt{13} }{2}

4 0
3 years ago
Read 2 more answers
Find the center, vertices, and foci for the ellipse 25x^2 + 64y^2 = 1600
Alisiya [41]

Answer:

The answer to your question is below

Step-by-step explanation:

Data

Equation               25x² + 64y² = 1600

Process

1.- Divide all the equation by 1600

                             25x²/1600 + 64y²/ 1600 = 1600/1600

-Simplify

                              x²/64 + y²/ 25 = 1

2.- Equation of a horizontal ellipse

                             \frac{x^{2} }{a^{2}} + \frac{y^{2}}{b^{2}} = 1

3.- Find a, b and c

    a² = 64             a = 8

    b² = 25             b = 5

-Calculate c with the Pythagorean theorem

                   a² = b² + c²

-Solve for c

                   c² = a² - b²

-Substitution

                   c² = 8² - 5²

-Simplification

                  c² = 64 - 25

                  c² = 39

-Result

                  c = √13

4.- Find the center

          C = (0, 0)

5.- Find the vertices

          V1 = (-8, 0)     V2 = (8, 0)

6.- Find the foci

          F1 = (-√13, 0)   F2 = (√13, 0)

7 0
3 years ago
Sally designs web pages. She charges $140 per web page. She also needs to pay
dolphi86 [110]
You will take 140 times 5 since that is the amount she made so you times it buy the price she earns then after you do that subtract it buy 650 since that is what you have to pay
140 x 5 = 700
700 - 650 = 50
so she made a profit of 50
6 0
3 years ago
Manny made $102.05 for 6.5 hours of work. How much did he make per hour?
Sphinxa [80]

Answer:

$15.70/hr

Step-by-step explanation:

The unit rate (amount earned per hour) is calculated as follows:

$102.05

------------- = $15.70/hr

6.5 hrs

5 0
3 years ago
| 5x -2y | - | 3x | if x = -3 and y = 2
Natalka [10]

Answer:

If x = -3 and y = 2, then |5x-2y|-|3x| = 10

Step-by-step explanation:

This is a problem that utilizes both substitution and the order of operations.

|5x-2y|-|3x| = \\|-15-(2)(2)|-|(3)(-3)| =\\ |-15-4|-|(3)(-3)| =\\|-19|-|(3)(-3)| =\\19-|(3)(-3)| =\\19-|-9| =\\19-9 =\\10


5 0
3 years ago
Read 2 more answers
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