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Strike441 [17]
3 years ago
11

Please please please help

Mathematics
1 answer:
klio [65]3 years ago
8 0
D. 270 degrees counterclockwise
hope this help!
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Identify the equation of the circle that has its center at (-27,120)And passes through the orgin
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The equation of a circle is (x-h)^2 + (y-k)^2 = r^2. Where "x" and "y" are variables, "h" and "k" are the coordinates of the center of the circle, and "r" is the length of the radius. It is given that the center of the circle is (-27, 120). So, h= -27 and k= 120. If the circle passes through the origin, we can assume that the origin is on the circle. Since a circle's radius is constant no matter where it is drawn/is, we can find the radius of the circle by finding the distance between the circle's center (-27, 120) and the origin, (0, 0). The distance formula is: d= √((x[2]-x[1])^2-(y[2]-y[1])^2). If the coordinates of the center of the circle are (x[2}, y[2]), then x[2]= -27 and y[2]= 120. Then, the origin is the (x[1], y[1]). So, x[1] = 0 and y[1] = 0. Plugging the numbers in we get: √((-27-0)^2-(120-0)^2). This gives us √(729+14400) = 123. So since the distance between the center of the circle and a point on the circle is 123 (units), then the radius has a value of 123.

Plugging all the numbers into the equation of a circle, we get: (x-(-27))^2+(y-120)^2=123^2.
7 0
3 years ago
How many edges does a solid with 11 faces and 11 vertices have?
Rzqust [24]

Answer:

20

Step-by-step explanation:

Given: F = 11, C = 11, E=?

By Euler's formula, we have:

F + V - E = 2 \\  \therefore \: 11 + 11 - E = 2 \\  \therefore \:22 -  E = 2 \\  \therefore \:22 -  2 = E  \\  \huge \red{ \boxed{\therefore \: E = 20}}

Hence, the solid will have 20 edges.

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3 years ago
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sergij07 [2.7K]

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Step-by-step explanation:

yeah-ya......... right?

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If you get this you are a critical thinker. I enter the garden. There are 34 people. You kill 30. How many people are in the gar
lozanna [386]

Answer:

35

Step-by-step explanation:

34+ you = 35

After killing still people are inside room.

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3 years ago
Help pls and thanks :)
Morgarella [4.7K]

Answer:

The two triangles can be considered similar as Angle A is 70 degrees and Angle B is a congruent angle to Angle A, which can be proven by adding 70 to 110 which shows a 180 degree angle (flat angle). Therefore we know that this triangle is similar

Step-by-step explanation:

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