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Tabitha wants to hang a painting in a gallery. The painting and frame must have an area of 58 square feet. The painting is 7 feet wide by 8 feet long. Which quadratic equation can be used to determine the thickness of the frame, x? Image of a frame 7 feet wide by 8 feet long, with an of x on the bottom and right sides x2 + 15x − 2 = 0 x2 + 15x + 58 = 0 4x2 + 30x − 2 = 0 4x2 + 30x + 58 = 0
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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A graph of a quadratic function is shown below. graph of y equals negative 2 times x squared plus 40 x plus 600 What is the vertex of the parabola shown? (30, 0) (800, 10) (0, 600) (10, 800)
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help_people
  • help_people
@jim_thompson5910 @Crazyandbeautiful
help_people
  • help_people
@whpalmer4
jim_thompson5910
  • jim_thompson5910
Please post questions one at a time. Which one is giving you more trouble?
help_people
  • help_people
umm the seocnd one and srry :( @jim_thompson5910
jim_thompson5910
  • jim_thompson5910
that's ok do you see how the given equation matches up with the form ax^2 + bx + c ?
help_people
  • help_people
yes
help_people
  • help_people
wiat not not for the second one
jim_thompson5910
  • jim_thompson5910
|dw:1442708862589:dw|
jim_thompson5910
  • jim_thompson5910
|dw:1442708890735:dw|
jim_thompson5910
  • jim_thompson5910
|dw:1442708908746:dw|
jim_thompson5910
  • jim_thompson5910
|dw:1442708921034:dw|
jim_thompson5910
  • jim_thompson5910
|dw:1442708932348:dw|
help_people
  • help_people
ok yes
help_people
  • help_people
@jim_thompson5910
jim_thompson5910
  • jim_thompson5910
so if a = -2 and b = 40, we can plug them into \[\Large h = -\frac{b}{2a}\] what is the value of h when you do this?
help_people
  • help_people
h=-40/2(-2) h=10
jim_thompson5910
  • jim_thompson5910
very good
jim_thompson5910
  • jim_thompson5910
what we do next is plug that value (10) in for x \[\Large y =-2x^2 + 40x + 600\] \[\Large y =-2(10)^2 + 40(10) + 600\] \[\Large y = ???\]
help_people
  • help_people
800 @jim_thompson5910
help_people
  • help_people
800
jim_thompson5910
  • jim_thompson5910
good
jim_thompson5910
  • jim_thompson5910
h = 10 and k = 800 making the vertex to be (10,800)
jim_thompson5910
  • jim_thompson5910
in general, the vertex is (h,k)
help_people
  • help_people
@jim_thompson5910
jim_thompson5910
  • jim_thompson5910
I'm already here and responding. There's no need to keep tagging me like that.
help_people
  • help_people
so the answer is (!0,800)? could you help w/ the other and i will repost
jim_thompson5910
  • jim_thompson5910
yeah `(10,800)`
help_people
  • help_people
ty could you help w/ 1 more?
help_people
  • help_people
ty could you help w/ 1more?
jim_thompson5910
  • jim_thompson5910
sure, post as a new question and tag me in it
help_people
  • help_people
ok !

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