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does anyone know of any free learning sites besides khan academy? any answers well be appreciated

Im asking because some of the stupid things these people say are things that are really stupid like they don't care about there being slavery or someone dont care how they are very sexist if not racist and they just don't care.

My question is how come everyone thinks its good just for guys to make the first move? And it's ok if a girl just sits back and waits for a guy to ask her out i mean this is very sexist just because someone is born with different hormones then another person means that that person is expected to make the first move. No one gets to chose what sex there born as so why if your born as a guy it's basically well your screwed because you have to make the first move. I mean seriously so basically what your telling me is that if your born as a guy and your shy then your f-u-c-k-e-d because you will be single for all of your life because girls are too stubborn to make the first move (because there are a lot of guys in this world who end up single their whole lives just for that reason that their too shy, but it's ok for a girl to be too shy because it's expected for the guy to make the first move and not the girl.)

How did England, France and Spain make money from their own colonies?

so I need help solving 2=square root(3b-2) MINUS square root(10-b)

How do you solve the equation Square root(56-r)=r

So there was this girl in my class who would look at me everyday and I act like i didn't notice it and every time i would look at her she would look away anyways as time went on I found that she was doing this everyday for the longest time (and when i mean for the longest time i mean two to two and a half months) and she still does this to this day.So i started thinking that maybe she likes me but here's the problem is that a week or week and a half ago I saw her holding hands with another guy and my mom told me that a lot of times a guy think's a girl likes him when she really doesn't. So now i'm starting to think she doesn't like me but again she still looks at me everyday and every time I look at her she still looks away. like I said I personally don't think she likes me but what do you guys think?