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anonymous
 5 years ago
jane works north of her home. her husband Bob works east. they leave for work at the same time. By the time Jane is 7 miles from home, the distance between them is one mile more than Bobs distance from home. How far from home is bob?
anonymous
 5 years ago
jane works north of her home. her husband Bob works east. they leave for work at the same time. By the time Jane is 7 miles from home, the distance between them is one mile more than Bobs distance from home. How far from home is bob?

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0theorem of pythagoras i would say

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.07^2 + (x)^2 = (x+1)^2

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0this produces the quadratic \[49 + x ^{2} = x^2 + 2x + 1\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i dont understand quadratics =(

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0u dont have to in this case as you may simply subtract x^2 from both sides and you get a linear equation in x which is then solved by subtracting one from both sides and dividing by 2

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i dont understand any of it =(

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0pythagoras theorem states \[hypthenuse^2 = adjacent^2 + opposite^2\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0can u see how their movements form a right angled triangle? draw it for urself

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i thought it was a +b=c

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0pythagoras' theorem? no the sides are squared

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i dont understand. sorry

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0start by drawing the problem. mark a dot on the page for their home and then take a line 7 north for janes movement.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0now go back to the dot and take a line east for the dot (length doesnt matter) let this line have length x

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0now mark the positions of mary and bob by a dot. now join those two dots and let the length of this new line be x+1 because the question says the distance between them is one more than how far bob is from home

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0now can you see the right angled triangle? the hypothenuse (longest side) has length x+1. apply pythagoras theorem to get \[7^2 + (x)^2 = (x+1)^2\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.07x to the 4th = 2x+2?? i dont know what im doing...im far from help

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0i think you are confused between powers of a number and mulitplication\[(x+1)^2 = (x+1)(x+1) = x^2 +x + x +1 = x^2 +2x +1\]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0which is the right hand side, left hand side is just 49 + x^2

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0almost \[49+x^2 = x^2 + 2x + 1 \rightarrow 49 = 2x +1 \rightarrow 2x=48 \]

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0verify the steps yourself to make sure u understand

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.049+x times x=(x+1)(x+1)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0only i dont know how to answer that 49x2=x2+1x+1?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0thank you for your help
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