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Ne4ueva [31]
3 years ago
12

3x^2+6x+3y^2-12y+54=0 is a ____.

Mathematics
1 answer:
alexira [117]3 years ago
8 0

Answer:

radius 2

Step-by-step explanation:


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Tower A is 20 miles due North of tower B. A dinosaur is spotted from the tower A at °E and from tower Bat N34°E. How far is the
bekas [8.4K]

Answer:

Step-by-step explanation:

let dinosaur be at C

apply sine formula

∠A=56°

∠B=34°

∠C=180-(56+34)=180-90=90°

\frac{20}{sin 90} =\frac{BC}{sin 56} \\BC=20 sin 56 \approx 16.58 miles

4 0
2 years ago
Kenya exchanges $200 for euros (€). Suppose the conversion rate is €1 = $1.321. How many euros should Kenya receive? (1 point)
IceJOKER [234]
I believe about €151.40
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3 years ago
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What is the value of h in the figure below? In this diagram BAD~CBD
liberstina [14]

Answer:

The correct option is E. 8

The value of h is 8 unit.

Step-by-step explanation:

Given:

Δ BAD ~ Δ CBD

AC = 20

DC = 4

∴ AD = AC - DC=20-4=16

To Find:

h = ?

Solution:

Δ BAD ~ Δ CBD      ................Given

If two triangles are similar then their sides are in proportion.

\frac{BD}{CD} =\frac{AD}{BD} =\frac{BA}{CB}\ \textrm{corresponding sides of similar triangles are in proportion}\\  

On substituting the given values we get

\dfrac{BD}{CD} =\dfrac{AD}{BD}

\dfrac{h}{4} =\dfrac{16}{h}\\\therefore h^{2}=64\\\therefore h=8\ unit

The value of h is 8 unit.

8 0
3 years ago
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Round these decimals to 2 decimals places.Please I need some help...
Naddik [55]
A) 1.15
B) 2.87
C) 3.59
D) 4.22
E) 5.74
F) 6.95
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J) 28.33
8 0
3 years ago
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Determine the equation of a circle whose diameter has the endpoints (-1, 2) and (7.
Viefleur [7K]

Answer:

(x - 3)^2 + (y + 1) = 25

Step-by-step explanation:

First find the midpoint of the diameter, because that represents the center of the circle.

                                                                     -1 + 7

The x-coordinate of the midpoint is xm = ---------- = 3

                                                                          2

                                                 2 - 4

and the y-coordinate is ym = ---------- = -1

                                                     2

And so the center of this circle is at (3, -1).

Use the Pythagorean Theorem to determine the square of the radius:

square of radius = 4^2 + (-3)^2 = 16 + 9 = 25

And so the equation of this circle is (x - 3)^2 + (y + 1) = 25

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2 years ago
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