pandaecat
  • pandaecat
Check my answer please! Alexei wants to hang a mirror in his boat, and put a frame around it. The mirror and frame must have an area of 19.25 square feet. The mirror is 3 feet wide and 5 feet long. Which quadratic equation can be used to determine the thickness of the frame, x? My answer is 4x^2+16x+15.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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pandaecat
  • pandaecat
The choices are 2x^2 + 8x − 19.25 = 0 3x^2 + 5x − 19.25 = 0 4x^2 + 16x − 4.25 = 0 4x^2 + 16x + 15 = 0
triciaal
  • triciaal
|dw:1440442414237:dw|
pandaecat
  • pandaecat
OK ty!

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triciaal
  • triciaal
wait
pandaecat
  • pandaecat
Hmm?
triciaal
  • triciaal
|dw:1440442684697:dw|
pandaecat
  • pandaecat
I don't really get it...
triciaal
  • triciaal
the area is 4x^2 + 16x + 15 is the area of mirror + frame = 19.25 the frame is total area - mirror so minus 15 = 4.25
triciaal
  • triciaal
quadratic for frame 4x^2 + 16x - 4.25 = 0
triciaal
  • triciaal
sorry for the time lapse my sister called long distance don't multitask well
triciaal
  • triciaal
do you have any questions?

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