Ex-CIA Spy: China Is Preparing & We're Not Paying Attention! Here's What Happens If They Takeover!

So we have a sum here of 2 plus 6 plus 18 plus 54, and we could obviously just evaluate it, add up these numbers. But what I want to do is I want to use it as practice for rewriting a series like this using sigma notation. So let’s just think about what’…

[Instructor] Have you ever heard someone call birds living dinosaurs? You might find that hard to believe. After all, the city pigeons that you see wandering around town don’t look particularly ferocious like a Tyrannosaurus rex. But it turns out that our…

We have the graphs of three functions here, and what we know is that one of them is the function f, another is the first derivative of f, and then the third is the second derivative of f. Our goal is to figure out which function is which— which one is f, …

I’m Jeff Dodds. I’m a math content creator here at Khan Academy. I had a fixed mindset for a really long time. I was convinced that I was a math person and I was smart and I was just good at math. So, I remember the first time I really struggled. I was t…

We’re southbound on Pon. It appears to be three male blacks in the vehicle; it’s a white Hyundai. [Applause] I believe at any time during this evening, did it go through your mind that this was not a human being that you were beating? The police approach…

We are told Ismail made a scaled copy of the following quadrilateral. He used a scale factor less than one. All right, and then they say, what could be the length of the side that corresponds to AD? So, AD is right over here. AD has length 16 units in ou…