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Algebra and Functions Videos 30 videos
Algebra and Functions: Drill Set 4, Problem 1. Which of the graphs fits the equation?
Algebra and Functions: Drill 4, problem 2. If the function for the area of a circle with respect to its diameter was graphed in the first quad...
Algebra and Functions: Drill 4, Problem 3. The sum of the quadratic parent function and the line given has which of the following as its graph?
CAHSEE Math 1.5 Algebra and Functions 218 Views
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Description:
Algebra and Functions: Drill Set 1, Problem 5. Evaluate the expression.
Transcript
- 00:03
And here's another shmoop du jour.
- 00:05
Evaluate the expression 2ab - 3 times the square root of bc... for a = 9, b = 4, and c = 1.
- 00:14
Here are the potential answers...
- 00:16
Hit the pause button and try this thing first yourself.
- 00:20
So, this is just testing whether we can... plug. So... let's.
Full Transcript
- 00:27
If we take the base case equation here...
- 00:29
...and plug in the numbers as noted here...
- 00:31
...we get 2 times 9 times 4 minus 3 times the square root of 4 times 1.
- 00:38
Now let's simplify this mess.
- 00:40
2 times 9 is 18... times 4 is 72... minus 3 times the square root of 4... which is 2...
- 00:47
or 3 times 2, which is 6
- 00:50
So we have 72 minus 6 which is... the devil's number.
- 00:54
Or...D. As in devil.
- 00:55
It's okay. We'll get a priest in here to get this problem exorcised.
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