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3 years ago

Find an ordered pair , x y that is a solution to the equation. 3x-y=1

Mathematics

1 answer:

NemiM [27]3 years ago

3 0

Answer:

2,5

Step-by-step explanation:

2,5 is just one of the many solutions to this problem. you can just take a random number for x, for example 2. your equation will look like this 3(2)-y=1. now you just solve for y. 3x2=6. 6-1=5. so y=5.

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3 years ago

Read 2 more answers

HELP FAST WILL MARK BRAINLIEST

Amanda [17]

Answer:

No, He is not correct.

the sum of all interior angles of triangles is 180°.

And, If an exterior angle of a triangle is acute ⇒ The adjacent interior angle is obtuse

Also, we know that an exterior angle of a triangle is equal to the sum of the opposite interior angles

Therefore, the sum of two interior angles is acute.

'The total sum of the all interior angles of the triangle =One obtuse angle+ acute sum of the angles' can be equal to 180°.

For example let the exterior angle of a triangle is 80° ( acute)

Therefore, the adjacent angle of this exterior angle = 180-80=100°

And, sum of the opposite angles = 80°

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Step-by-step explanation:

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3 years ago

Represent the answer of each of the following by an algebraic expression.

Montano1993 [528]

(A) 4(x+5). Distribute the 4 (multiply both numbers by 4) and you get

4x+4*5

4x+20

(B) 70 km/h * y hours is 70y km, because you traveled 70 km every hour, so it's 70 times y.

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3 years ago

Una elipse se describe segun la ecuacion (x-2)2 +(y-1)2 halla las coordenadas de los vertices, focos, las longitudes de las ejes

galina1969 [7]

Answer:

The equation of the ellipse is

$\frac{(x-2)^{2} }{100} +\frac{(y-1)^{2} }{36} =1$

This is the explicit form of an ellipse, where $h=2$ and $k=1$ , which means the center of the ellipse is at $C(2,1)$ .

Remember that the greatest denominator in an ellipse is the parameter $a^{2}$ and the least is $b^{2}$ , so

$a^{2}=100 \implies a=10\\ b^{2}=36 \implies b=6$

The length of the major axis is: $2a=2(10)=20$

The length of the minor axis is: $2b=2(6)=12$

Vertices are $(-8,1)$ and $(12,1)$ , because the center is not the origin of the coordinate system so, the vertices are displaced. The least axis vertices are: $(2,7)$ and $(2,-5)$ .

The foci are on the major axis, so their vertical coordinate is 1, their horizontal coordinate depends on parameter $c$ , which is related as the following