vanesa6
vanesa6
13-03-2017
Mathematics
contestada
Help please. I don't know how to start them.
Respuesta :
Аноним
Аноним
13-03-2017
I hope this helps you
3)
(x+6)(x-2)=13.5
x=75
2)
shorter leg=a
longer leg=a+7
hypothenus =2a+1
(2a+1)^2=a^2+(a+7)^2
4a^2+4a+1=a^2+a^2+14a+49
2a^2-10a-48=0
a^2-5a-24=0
a +3
a -8
(a+3)(a-8)=0
a=8
a+7=15
2a+1=17
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