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aleksley [76]
3 years ago
13

The equation for the circle is (x-2)^2 + (y-1)^2 = 4 True or False???

Mathematics
2 answers:
jasenka [17]3 years ago
8 0
True because the center is (2,1) and radius is 2
Schach [20]3 years ago
4 0

The equation for a circle is:

(x - h)^2 + (y - k)^2 = r^2

h = the x value of the center

k = the y value of the center

r = length of radius

In this case the center is (2, 1) and the radius is 2 units, meaning:

h = 2

k = 1

r = 2

The equation for this circle is:

(x - 2)^2 + (y - 1) = 4

This matches the equation given in the question so the answer is True!

Hope this helped!

~Just a girl in love with Shawn Mendes

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Please ASAP.
Flauer [41]

Answer:

2/3

Step-by-step explanation:

42/63 = 2/3

15/22.5 = 2/3

8 0
3 years ago
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If you add Natalie's age and Fred's age, the result is 42. If you add Fred's age to 3 times
Alla [95]

Answer:

N+F=42 & F+3N=70 System Solved: Natalie is 14 and Fred is 28

Step-by-step explanation:

Using variables N=natalies age and F=Freds age

N+F=42 ----> N=42-F (take this and plug it into the other equation)

F+3N=70 so F+3(42-F)=70 [simplify] F+126-3F=70 [further simplify]

-2F=-56 [divide -56 by -2] F=28 [then plug this number into the orig. equation]

So N+28=42 or N=14.

5 0
3 years ago
What inequalities are shown by this graph?​
kramer

Answer:

the answer is going to be

x>27

8 0
2 years ago
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Find the value of x in a triangle. x-20, x+10, x-20
tatyana61 [14]

The value of the angles should be. (x-40°). , (x-20°), (½x-10°) , not (x-40°) + (x-20°)+(½x-10°)

Sum of all the interior angles of a triangle is 180°.

So a equation can be made by the given data,

(x-40°) + (x-20°) + (½ x-10°) = 180°

x-40°+x-20°+½x-10° = 180°

2x+½x -60°-10° = 180°

5/2 x - 70° = 180°

5/2 x = 180° + 70°

5/2 x = 250°

x = 250° × 2/5

x = 50° × 2

x = 100°

So the angles are

x-40° = 100°-40° = 60°

x-20° = 100°–20° = 80°

½x-10° = ½(100)° - 10° = 50° -10° = 40°

The answer can be checked by putting the values of the angle we got in the second statement i.e. Sum of all the interior angles of a triangle is 180°.

60° + 80° + 40° = 100° + 80° = 180°

6 0
3 years ago
Reflect the triangle =(-1,-2), 4(1,1), V(4,- 3) across the line y = x
alekssr [168]

Answer:

see explanation

Step-by-step explanation:

Under a reflection in the line y = x

a point (x, y ) → (y, x ) , thus

(- 1, - 2 ) → (- 2, - 1 )

(1, 1 ) → (1, 1 )

(4, - 3 ) → (- 3, 4 )

5 0
3 years ago
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