Question

Help please. I don't know how to start them.

Answer 1

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