Today we found out an easier way to find the distance between 2 points on a grid. I thought it was a way better formula.

Today, we learned a lot about the cartesian plane. It was a lot of review. We also learned about how to measure distance on a x-y graph.

Today in math class we learned how to factor difference of squares. I thought it was kinda easy. I knew how to do it before. So I liked this lesson.

In math class today we learned how to factor trinomials using a different way. It was confusing at first but after the second example I got used to it.

Today in class we just had a test and I thought I did good. After that I just did accelerated math. I kinda get the long division but sometimes it doesnt make sense.

Cardboard Question

An 8cm square piece of cardboardis made into an open-topped box by cutting Xcm from each corner.
A) What is the volume of the box?
B) What is the max value of x?



A) V=L x W x H
V=(8-2x)(8-2x)(x)
V=64-16x-16x+4x squared(x)
V=64x-16x squared- 16x squared+4x cubed
V=4x cubed-32x squared-64x

B) The max value of x has to be three. The reason why four wouldn't work is because the side is 8cm. If you had taken away 4cm off both of the corners, there would be nothing left for a open topped box.