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yanalaym [24]
3 years ago
15

Identify the conic section represented by the equation y^2 -3x +4y +7 = 0

Mathematics
2 answers:
Harrizon [31]3 years ago
7 0

Answer:

Parabola

Step-by-step explanation:

Remember that the general equation for the parabola is:

(x - h)2 = 4p (y - k)

This means that when you have an equation where only one of the variables is squared you are dealing with a parabola, in this case you have a parabola that grows horizontally, since Y can assume values in the whole spectrum from minus infinite to infinite but X not all of them.

babunello [35]3 years ago
5 0

Answer:

Parabola

Step-by-step explanation:

When only one variable is squared, the conic is a <em>parabola</em>.

_____

both squared, same sign, same coefficient: circle

both squared, same sign, different coefficients: ellipse

both squared, different signs: hyperbola

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Plz answer no fake stuff plz
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<h3>3 Answers:</h3>
  • A) The product of the area model is 3055
  • D) The missing number is 200
  • E) The model shows 47 x 65

=======================================================

Explanation:

The first number along the top is 40, and it multiplies with the second number along the side to get 40 x 5 = 200

You can think of it as 4 x 5 = 20, then you tack on an extra 0 to the '4' and to the '2' as well, so it keeps things balanced.

So this explains how choice D is one of the answers.

-------------------------

After 200 fills in that question mark, we'll have these four numbers inside the table: 2400, 420, 200, and 35

Those four values add up to: 2400+420+200+35 = 3055

This shows that choice A is one of the answers.

--------------------------

Finally, choice E is the third answer because along the top we have 40+7 = 47, and along the side we have 60+5 = 65

Put another way, the total top length is the sum of the two smaller pieces of 40 and 7, which explains how the total top length is 47 units long. A similar argument happens for the left side values as well.

We ultimately have a rectangle that is 47 units across in the horizontal direction, and 65 units tall in the vertical direction.

With your calculator, you should note that 47*65 = 3055 to help confirm everything lines up.

--------------------------

Extra info:

Choice B is false because this contradicts choice D.

Choice C is false because it contradicts choice E

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