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anonymous
 5 years ago
can anyone help me with solving problems using quadratic functions?
anonymous
 5 years ago
can anyone help me with solving problems using quadratic functions?

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amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0..... same stuff eh :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0The company discovered that it costs $45 to produce 2 calculators, $143 to produce 4 calculators, and $869 to produce 10 calculators. Using quadratic functions, find the cost of producing 7 calculators.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0:) ill try this the elimination way this time and see what I get ;)

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.04a + 2b +c= 45 4a + 2b +c= 45 16a + 4b +c = 143 100a +10b +c = 869 (1/4) 4a + 2b +c= 45 4a + 2b +c= 45 16a + 4b +c = 143 100a +10b +c = 869 (16) 1a + b/2 + c/4= 45/4 (100) 1a + b/2 +c/4= 45/4 16a + 4b +c = 143 100a +10b +c = 869 16a  8b  4c= 180 100a  50b 25c= 1125 16a + 4b + c = 143 100a + 10b + c = 869   4b 3c = 37 40b 24c = 256

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0(1/4) 4b  3c = 37 40b 24c = 256 (40) b + 3c/4 = 37/4 40b 24c = 256 40b + 30c = 370 40b 24c = 256  6c = 114 c = 19

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0no, 19 is part of the quadratic equation ...like this: ax^2 +bx +19 = y

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.040b 24c = 256 40b 24(19) = 256 40b 456 = 256 40b = 256 +456 40b = 200 b = 5 ax^2 5x + 19 = y so far ;)

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.04a + 2(5) +19= 45 4a 10 +19 = 45 4a = 45 +10 19 4a = 36 a = 36/4 = 9 y = 9x^2 5x + 19; now what does this equal when x = 7?

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0y = 9(7)^2 5(7) + 19 y = 9(49) 35 +19 y = $425 for 7 cameras

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0going over the math to se if I am right...

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0you were (: a rock is launched from a cannon. after one second, the rock is 58 feet in the air; after 2 seconds the rock is 112 feet in the air. find the height, in feet, of the rock after 10 seconds in the air.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0so we have 2 points, 1,58 and 2,112, were missing a 3rd point.....but are we? the third point is at time=0 the position of our rock is at a heaight of 0 so we have our 3rd point (0,0) 0a +0b +c = 0..... c = 0 that was easy enough for that one :) 1a +1b = 58 4a +2b = 112 a = 58b so just substitute that back into the secnd one... 4(58b) +2b = 112 232 4b+2b = 112 2b = 112 232 b = 120/2 = 60 b = 60  a = 58b a = 5860 = 2 y = 2x^2 +60x y = 2(x^2 30x) when x=10... y = 2((10)^2 30(10)) y = 2(100300) y = 2(200) y = 400 ...let me recheck my work ;)

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0i missed 3 questions on my trig test monday..... simple mistakes really, forgot to look at sign changes and even had right answers but wrong answer circled....

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0that's my problem usually too! The company discovered that it costs $45 to produce 4 camera cases, $257 to produce 7 camera cases, and $792 to produce 12 camera cases. Using quadratic function, find the cost of producing 1 camera case.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0i wonder if I can write a formula for this to make things easier on me :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0possibly. it doesn't give me one to use on any of these.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0ill go to the other posting you did.... and try my matrix skills :)
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