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zimovet [89]
3 years ago
7

Carrie said "448 rounds to 500 because 448 rounds to 450 and 450 rounds to 500." Is she correct? Explain.

Mathematics
2 answers:
mestny [16]3 years ago
7 0

Answer:

no she is not correct because it would have to be 450 in order to round to 500

CaHeK987 [17]3 years ago
6 0

Answer: No she is not correct

Step-by-step explanation:

She is saying that 448 rounds to 500 but 448 actually rounds to 400

so it would going to have to be 450 or higher to round to 500

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Samantha threw an apple out of a window from the tenth floor of her apartment building.The equation y=-16t^2+120 can be used to
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If the 2 is an exponent, it should be marked as such.
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Which of these lists include all possible outcome for drawing a marble from a bag with 2 red,3 green, and 2 blue marbles?
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3 years ago
Write the standard form of the equation for the circle that passes through the points (2,31),(-15,14),(33,0)
stepladder [879]

Answer:

Step-by-step explanation:

Begin with the standard form of a circle as a conic:

Ax^2+Bxy+Cy^2+Dx+Ey+F=0

For a circle, A and C will be the exact same, and B will equal 0.  If B is non-zero, the equation represents a rotation of a conic, which is reserved for college-level courses.  Shortening this, then:

x^2+y^2+Dx+Ey+F=0 is good enough for us for this.  Start with the first point on the circle, (2, 31) and fill in the equation above with x and y:

2^2+31^2+2D+31E+F=0 which simplifies down to:

(1):2D+31E+F=-965

Do the same with the next point on the circle, (-15, 14):

-15^2+14^2-15D+14E+F=0 which simplifies down to:

(2):-15D+14E+F=0

Do the same with the last point, (33, 0):

33^2+0^2+33D+0E+F=0 which simplifies down to:

(3):33D+F=-1089

Now we will add (1) and (2) to get (4):

 2D + 31E + F = -965

-15D + 14E + F = -421

Multiply the top equatio by -1 to get rid of the F terms:

 -2D - 31E - F = 965

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-15D + 14E + F = -421

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-15D + 14E + F = -421

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