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Hatshy [7]
3 years ago
15

Please please help me please help now please please help and show your steps help NOW PLEASE please help

Mathematics
1 answer:
Furkat [3]3 years ago
3 0

Answer:

x=3, y=-1

Step-by-step explanation:

We know that lcm(7, 2)=14, so we need to multiply equation 1 by 2.

This gives 2(4x-7y)=2(19), which simplifies to 8x-14y=38.

We know that lcm(2, 7)=14, so we need to multiply equation 2 by 7.

This gives 7(3x-2y)=7(11), which simplifies to 21x-14y=77.

Aha! Now we have a path to the solution!

We can subtract the first equation from the second to eliminate y.

This gives (21x-14y)-(8x-14y)=(77)-(38), which simplifies to 13x=39.

We can then divide by 3 to obtain x=3!

Then, we plug x=3 into the second equation to get 3(3)-2y=11.

We can subtract 9 from both sides to get -2y=2.

We then divide by -2 to obtain y=-1.

So, x=3 and y=-1, and we're done!

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Step-by-step explanation:

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Answer:

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45 units and is centered at
mariarad [96]

The correct question is:

A circle has a radius of 45 units and is centered at (-2.4, -4.8).

What is the equation of this circle?

Answer:

Equation of the circle is;

(x + 2.4)² + (y + 4.8)² = 2304

Step-by-step explanation:

The standard equation of a circle is;

(x - a)² + (y - b)²  =  r²

where;

(a,b) is the center of the circle and r is the radius of the circle

Now, from the question, the circle is centered at (-2.4, -4.8) and the radius is 45

Thus, plugging those values into the standard form of equation of a circle, we have;

(x - (-2.4))²  +  (y - (-4.8))²  = 48²

This gives;

(x + 2.4)² + (y + 4.8)² = 2304

3 0
3 years ago
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