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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.
ACT Math: Pre-Algebra Drill 1.2. What proportion of Jenna's day is spent Wii-swimming?
ACT Math 5.2 Intermediate Algebra 301 Views
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Description:
ACT Math: Intermediate Algebra: Drill 5, Problem 2. Find the product.
ACT Math: Intermediate Algebra: Drill 5, Problem 2. Find the product.
Transcript
- 00:02
And another shmoop de jour for you and your ... brian.
- 00:05
Multiply Matrix 1 -1 by -1 1.
- 00:12
And here are the potential answers...
- 00:16
Okay, It's just about matrix distribution. They just want to see if we know how to deal
- 00:20
with these funky things in brackets.
Full Transcript
- 00:22
Take "1 times the minus 1 here" and the answer goes... here; then we have 1 times
- 00:30
1, which is... 1.
- 00:32
Now we have "minus 1 times minus 1," and we get 1, which goes here... and then "minus
- 00:38
1 times 1" giving us minus 1.
- 00:40
So the answer is D.
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