Sorry I scribed so late. Haha. Lost track of time. Anyways we started our new unit last friday on Using Formulas, and finding Distances. We were given four steps to think about before answering a question.
1. Identify what you are asked to find.
2. What Information can you use?
3.Can you use the info directly from the question or do you need to do some calculations.
4. Solve.
We were given a question to find a volume of a square. The problem was that we weren't given the length or the width. But we were given information that the square is 8 cm. We were given paper and we cut out a 8 x 8 cm square. We folded each side and cut out the corners. We now had to measure it and find the volume. V = LWH. But it still wasn't enough to find the answer. So we were taught that we can use the Pythagoras Theorem where the answer came out to be;
V=(8-2x)(8-2x)(x)
V=(64 - 16x - 16x + 4x^2)
V= 64x - 32x^2 + 4x^3 cm^3
The next topic was Distance b/w pts. We learned how to place points on a y and x axis. And use the distance formula d = V(x^2-x1) + (y2-y1)^2). Sorry i can't put the big v and the line on top. We showed how the can be collinear (on the same line). Class was fun. Dont forget your homework on Exercise 4. Enjoy!
Welcome to a world where creativity, ingenuity, and mathematics mesh together to create Grade 10 Precalculus math.
