ShmoopTube
Where Monty Python meets your 10th grade teacher.
Search Thousands of Shmoop Videos
Algebra Videos 351 videos
If fleeing criminals always fled the scene of the crime at perfect right angles, it would be much easier to determine their whereabouts. Fortunatel...
Okay, so this probably isn't going to help you master Pokemon Go, but game theory can be applied to all sorts of situations. Even stomping your old...
ACT Math 7.4 Pre-Algebra 348 Views
Share It!
Description:
ACT Math: Pre-Algebra Drill 7, Problem 4. Solve for x.
Transcript
- 00:03
Hello boys and girls it's Howdy Shmoopy time!
- 00:08
Solve for x: Absolute value of
- 00:10
X -1 over 2 equals -2
- 00:13
And here are the potential answers....
- 00:19
Okay, so what is question asking? Well it's an absolute value problem, yeah.
Full Transcript
- 00:23
These vertical line thingies that look like prison bars, except you're the one
- 00:28
forced to solve this problem. Those numbers are free to come and go as they please.
- 00:34
The trick to this question is just remembering that absolute value symbols
- 00:37
make everything inside them
- 00:39
positive. It means that we can just ignore the stuff inside the absolute value
- 00:43
things here.
- 00:43
And use good old common sense to realize that no x can ever make the left side equal -2
- 00:50
So the solution is that there's no solution.
- 00:53
Answer E. As in "Ex-con".
Related Videos
ACT Math: Plane Geometry Drill 3, Problem 1. What is the area of the trapezoid shape in the video?
ACT Math: Coordinate Geometry Drill 1, Problem 1. Which inequality is expressed by the number line?
ACT Math: Intermediate Algebra: Drill 3, Problem 1. Find the fifth number in the series.
We don't like knocking people down to size, but we do like simplifying radicals. Join us?
If fleeing criminals always fled the scene of the crime at perfect right angles, it would be much easier to determine their whereabouts. Fortunatel...