Joe Song#TEE#BringBackBackgrounds

they aren't right angles, and they aren't perfectly square. Get a protractor.

1. Community
2. Study Group
3. Why isn't this a right angle?

Me too!

1. Community
2. Technical Issues and Workarounds
3. There Is A Problem With The Nice Streak Badge!

The difference between squaring and cubing is that in squaring, you multiply a number by itself (n*n). cubing is similar, but you do it 3 times (n*n*n).

1. Community
2. Study Group
3. Squaring and Cubing

The 12 km/h is the speed at which the car was traveling, so 1/2 of an hour * 12km/h = 6km traveled in all. The 3 km is the distance from home to store one-way. I hope this explained it!

1. Community
2. General Khan Academy Questions
3. What is Velocity?

you have to get 20 questions correct in a row

1. Community
2. Technical Issues and Workarounds
3. Nice Streak badge seems to be bugged

you need to wait at least 12 hours to take another one on the same course

1. Community
2. General Khan Academy Questions
3. How do I retake a Mastery Challenge?

This practice is considered advertising.

1. Community
2. Computing Platform Community Discussions
3. Guideline Question

thanks

1. Community
2. Study Group
3. surface area of cylinders