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ACT Mathematics Videos 164 videos
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.
Elementary Algebra Drill 2: Problem 2. Can you find the product?
ACT Math 4.4 Elementary Algebra 237 Views
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Description:
ACT Math Elementary Algebra: Drill 4, Problem 4. Solve the expression using the values given.
Transcript
- 00:03
You can't handle the shmoop... For this question, use x = -2, y = -1,
- 00:09
and z = 0. Solve: x over y plus y over x plus z over xy.
- 00:17
And here are the potential answers...
- 00:22
Ok. It just wants us to plug in some
- 00:24
numbers and see what comes out the other side...
Full Transcript
- 00:27
When we do that, we get negative 2 over negative 1 plus negative 1 over negative 2 plus 0 over...
- 00:33
whatever... because 0 over anything is just zero.
- 00:36
So if we simplify, our negative signs cancel out and we get 2 plus a half...
- 00:41
...and the answer is C. There.
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