Enjoy learning or reviewing material in various topics in mathematics or other subjects that utilize this wonderful tool, such as certain areas of science and engineering.
@@GoobyisCrazy sorry i didnt see this earlier, if i remember correctly it wasnt but some people did have questions on that! the test is different for everyone
To find the coordinates of the centroid, would you be able to add all x coordinates divided by 3 to get the x coordnate of the centriod, then add all y coordinates divided by 3 to get the y coordnate of the centroid?
Yes, you can most definitely use the formula ( (x1+x2+x3)/3, (y1+y2+y3)/3 ) to get the coordinates of the centroid. This would be the quickest way to get to the solution. I opted not to do this here because, personally, my students struggle with Algebra 1 and equations of lines, which is what I wanted to stress; however, that formula could be used by my students to check their work. Thank you for including this comment!
@58:58, which is GR.4.4, question #4, you can make a triangle, square, rectangle, pentagon, and hexagon from a cube by slicing it with a plane. Use the following link in Geogebra to visualize this: www.geogebra.org/m/X6GYjh2U
Thank you for mentioning this. I didn't actually draw all of the cross sections, so check the comment I just posted. You can make all of them except the octagon.
You facilitated this much for me and I've learned more criteria with your 50 minute video then the 9 months i've been in school for. Keep doing what you're doing!
On 18:19 on Video, question b, you're supposed to use the formula (x-y)/2, but I used (x+y)/2 when I showed my work. It should be (2y-28)/2 = 34; 2y-28 = 68; 2y = 96; y = 48 degrees!
Thank you so much for taking the time out of your day to make this, this is insanely helpful, thank you so so much, I was trying to find a review for the cycle 2 and yours was the only one that fully covered it, have an amazing day and keep up the good work!
Helloooooooooooo. At 2:39, should it be 121 - (-96) = 217 since: -4 * 8 = -32 -32 * 3 = -96 121 - (-96) = 217 217 > 0 = 2 real roots? Thanks for the videos, they've been very helpful in my Algebra class.
It's helpful to think of it in terms of order of operations, so you would multiply first, then subtract. i.e: 121 - 4*8*3 = 121 - 32*3 = 121 - 96 = 25 ; another way to think about it is to rewrite subtraction in terms of addition to a negative number. For instance, 121 + (-4)(8)(3) = 121 + (-32*3) = 121 + (-96) = 25, leaving the answer in the video correct. I hope this helps. I'm glad the tutorials have helped you in your class so far!
