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3 years ago

A parabola has a vertex at (3, -2). What is the axis of symmetry? x = _____

Mathematics

2 answers:

nikdorinn [45]3 years ago

8 0

Answer:

x =3

Step-by-step explanation:

The axis of symmetry is at the vertex

The x coordinate gives the axis of symmetry

x =3

PSYCHO15rus [73]3 years ago

4 0

Answer:

x = 3.

Step-by-step explanation:

The equation of the parabola is

f(x) = a(x - 3)^2 - 2 where the vertex is (3, -2).

The axis of symmetry passes though x = 3

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True.

Step-by-step explanation:

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3 years ago

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Answer:

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2 years ago

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3 years ago

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1 and 1/4 divided by 7

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Answer:

5/28 or 0.17857142

Step-by-step explanation:

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3 years ago

This was given to me during a summative test and the teacher didn't bother giving me the correction. I just cannot figure it out

Dmitry [639]

Base be y

ATQ

$\\ \sf\longmapsto xy=6050\dots 1$

$\\ \sf\longmapsto 2(x+y)=220\implies x+y=110\dots 2$

Now

$\\ \sf\longmapsto (x+y)^2=x^2+y^2+2xy$

$\\ \sf\longmapsto 110^2-2(6050)=x^2+y^2$

$\\ \sf\longmapsto 12100-12100=x^2+y^2$

$\\ \sf\longmapsto x^2+y^2=0\dots(3)$

From all equations

$\\ \sf\longmapsto (x-y)^2=x^2+y^2-2xy$

$\\ \sf\longmapsto (x-y)^2=0-2(6050)$

$\\ \sf\longmapsto (x-y)^2=-12100$

$\\ \sf\longmapsto (x-y)=110\dots(4)$

Now

Adding 3 and 4

$\\ \sf\longmapsto 2x=220$

$\\ \sf\longmapsto x=110m$

One side won't be covered hence

y=2(110)=220m

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2 years ago

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