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stiv31 [10]
2 years ago
12

Trong mặt phẳng tọa độ, viết chương trình đường tròn (C') là ảnh của (C): x^2 +y^2 -2x+4y=0

Mathematics
1 answer:
ryzh [129]2 years ago
3 0

Step-by-step explanation:

Find the properties of the conic section

x

2

+

y

2

−

2

x

+

4

y

x2+y2-2x+4y.0

Center:

(1-2)

Radius:

√5

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A triangle contains angles mesuring 28 degrees and 37 degrees. How many degrees is the third angle?​
Orlov [11]

Answer:

  • 115°

Step-by-step explanation:

<u>We know that:</u>

  • Angles ∠A and ∠B are 28° and 37°.

<u>We don't know:</u>

  • Angle ∠C's angle

<u>So, we do this:</u>

  • Add the 180°
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<u>Solve:</u>

  • 180 - 28
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  • = 115.

Angle ∠C is 115°.

8 0
2 years ago
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blsea [12.9K]
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4 0
2 years ago
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Korolek [52]

Answer:

43 min

Step-by-step explanation:

subtract $24.84 from $30 and you get $5.16 and you divide that by 12 cents which then you get 43 min

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3 years ago
The side length of a square is 4 inches. Find the perimeter of the square. HELP PLEASE!
Elan Coil [88]

Answer:

16 in

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If f(x) = 7x2 - 4x, what is the value<br> of f(2)?<br> F -8<br> J 17<br> G 2<br> K 20<br> H 6
kow [346]

Answer:

K 20

Step-by-step explanation:

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f (2) = 7 (2)^2 - 4(2)

= 28 - 8

= 20

Since they replaced the x inside f(x) with 2, just do that the same to the right side, change all x into 2

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