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laylam25
Group Title
Find the lengths of the missing sides of the triangle:
17 on the hypotnuse, x+7 on the adjacent side, and x on the opposite side.
 one year ago
 one year ago
laylam25 Group Title
Find the lengths of the missing sides of the triangle: 17 on the hypotnuse, x+7 on the adjacent side, and x on the opposite side.
 one year ago
 one year ago

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MarcLeclair Group TitleBest ResponseYou've already chosen the best response.1
(x+7)^2 + x^2= 17^2. You can solve it yourself?
 one year ago

laylam25 Group TitleBest ResponseYou've already chosen the best response.1
are you sure we use a^2+b^2=c^2?
 one year ago

MarcLeclair Group TitleBest ResponseYou've already chosen the best response.1
Yes, the hypothenuse is the longest side of a right angle triangle. Unless I forgot my basic geometry.
 one year ago

laylam25 Group TitleBest ResponseYou've already chosen the best response.1
thats true, but idk what it would be then?
 one year ago

laylam25 Group TitleBest ResponseYou've already chosen the best response.1
foil the x+7?
 one year ago

MarcLeclair Group TitleBest ResponseYou've already chosen the best response.1
yes, simplify the x+7, you will get a quadratic, either find its root by factoring or use the quadratic formula
 one year ago

laylam25 Group TitleBest ResponseYou've already chosen the best response.1
so the root is 7?
 one year ago

MarcLeclair Group TitleBest ResponseYou've already chosen the best response.1
it can't be a negative. I got 6. ( I did it really quickly so you,d have to check). But a measurement cannot be negatie. ever.
 one year ago

laylam25 Group TitleBest ResponseYou've already chosen the best response.1
oh I see.how did you do it?
 one year ago

MarcLeclair Group TitleBest ResponseYou've already chosen the best response.1
(x+7)(x+7) + x^2 = 17^2. Bring all to one side it will give you 2(x^2+14x120). One of your zero will b 20 the other will be 6
 one year ago

laylam25 Group TitleBest ResponseYou've already chosen the best response.1
this is what I got
 one year ago

laylam25 Group TitleBest ResponseYou've already chosen the best response.1
17^2 = [x+7]^2 + x^2 289 = x^2 + 14x + 49 + x^2 2x^2 + 14x  240 = 0 divide by 2 x^2 + 7x  120 = 0 factor [x + 15][x  8] = 0
 one year ago

laylam25 Group TitleBest ResponseYou've already chosen the best response.1
so opposite side = 8 adjacent side = 15
 one year ago

laylam25 Group TitleBest ResponseYou've already chosen the best response.1
is that correct?
 one year ago

MarcLeclair Group TitleBest ResponseYou've already chosen the best response.1
yes that should be it, if what I calculated is right.
 one year ago

MarcLeclair Group TitleBest ResponseYou've already chosen the best response.1
oh wait wait, with yoru calculations you get x= 8, you have to plug it in x+7 therefore 8+7 = 15. Don't forget you had an initial equation
 one year ago

laylam25 Group TitleBest ResponseYou've already chosen the best response.1
yeah x=8 because when I set x+15=0 I get a negative 15. so I plug 8 back into x+7?
 one year ago

laylam25 Group TitleBest ResponseYou've already chosen the best response.1
so my opposite side is just 8? and adjacent is 15?
 one year ago

MarcLeclair Group TitleBest ResponseYou've already chosen the best response.1
yes thats it you got it. :)
 one year ago

laylam25 Group TitleBest ResponseYou've already chosen the best response.1
okay yay! thanks so much for your help :)
 one year ago
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