anonymous
  • anonymous
Help me?? i suck with math questions sometimes lol
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
10. y = x² – 2x – 2 y = 4x + 5 (–1, 1) and (–7, –23) (–1, 1) and (7, 33) (–1, 33) and (7, 1) no solution 11. If an object is dropped from a height of 144 ft, the function h(t) = –16t² + 144 gives the height of the object after t seconds. When will the object hit the ground? 1.5 s 3 s 6 s 9 s 12. A ball is thrown into the air with an upward velocity of 28 ft/s. Its height (h) in feet after t seconds is given by the function h = –16t² + 28t + 7. How long does it take the ball to reach its maximum height? What is the ball’s maximum height? Round to the nearest hundredth, if necessary. 1.75 s; 7 ft 0.88 s; 43.75 ft 0.88 s; 17.5 ft 0.88 s; 19.25 ft 13. A catapult launches a boulder with an upward velocity of 148 ft/s. The height of the boulder (h) in feet after t seconds is given by the function h = –16t² + 148t + 30. How long does it take the boulder to reach its maximum height? What is the boulder’s maximum height? Round to the nearest hundredth, if necessary. 9.25 s; 30 ft 4.63 s; 640.5 ft 4.63 s; 1,056.75 ft 4.63 s; 372.25 ft
anonymous
  • anonymous
is this connections achdemy
anonymous
  • anonymous
f you post one question at a time, you'll be more likely to get answers.

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anonymous
  • anonymous
lol connections xD
anonymous
  • anonymous
here http://www.wolframalpha.com/input/?i=y+%3D+x%C2%B2+%2B+3x+%E2%80%93+4+and+y+%3D+2x+%2B+2

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