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melamori03 [73]
3 years ago
11

Please someone help me and do not just write anything explain thank you . use the information provided to write the vertex form

equation of each parabola.
y= -2x^2-12x-28 I ended up with (6,-64) is that correct? And remember to add 28 to both sides first PPPPPPPPPPPLLLLLZZZ SOOOOOMMMMONE HEEEELP ME
Mathematics
1 answer:
notka56 [123]3 years ago
5 0
Ok, so user says that it should be solve for vertex not vertex form
(x,y)
to find the vertex of
y=ax^2+bx+c

the x value of the vertex is -b/2a
the y value is found by plugging in the x value for the vertex back into the original equation and evaluating


y=-2x^2-12x-28
a=-2
b=-12

xvalue of vertex is -(-12)/(2*-2)=12/-4=-3

x value of vertex is -3

plug backin for x
y=-2x^2-12x-28
y=-2(-3)^2-12(-3)-28
y=-2(9)+36-28
y=-18+8
y=-10

yvalue is -10
x value is -3

vertex is (-3,-10)
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You have 62% of a dollar

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4 0
3 years ago
A).$ -16.72<br> b).$75.50<br> c).$98.28<br> d).$16.72<br> e).$ -18.78
zlopas [31]

Option D

Money earned by Marty is $ 16.72

<em><u>Solution:</u></em>

Given that, Marty started a lawn mowing business

He kept track of his expenses and earnings in a table

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Gasoline = - $8.79

Moyer's yard = $ 40

Griffen's yard = $ 35.50

To find: Money earned by Marty

Total money earned = lawn mower + gasoline + moyers yard + griffens yard

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7 0
3 years ago
Which one is it? I need help
liubo4ka [24]

The statement that must be true about square WXYZ are as follows;

  • WX ≅ XY
  • WX ≅ YZ
  • ∠W is a right angle.

<h3>Properties of a Square.</h3>
  • All sides are equal to each other.
  • Opposite sides are parallel to each other.
  • All the angles are right angle.
  • The diagonals bisect each other and are perpendicular.

Therefore, the statement that must be true about square WXYZ are as follows;

  • WX ≅ XY
  • WX ≅ YZ
  • ∠W is a right angle.

learn more on square here: brainly.com/question/15019502

#SPJ1

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