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Math II Videos 98 videos
This video covers both independent and dependent events, although we much prefer independent events. Dependent events are just so dang clingy.
Disjoint events are events that cannot happen at the same time. If one happens, the other doesn't. Simple as that. Overlapping events, on the other...
SAT Math 1.1 Numbers and Operations. How many combinations of beverage and cereal can be made?
ACT Math 3.4 Pre-Algebra 455 Views
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Description:
ACT Math Pre-Algebra: Drill 3, Problem 4. Find the solution to this equation.
- Pre-Algebra / Square roots of numbers
- Product Type / ACT Math
- Foreign Language / Arabic Subtitled
- Foreign Language / Korean Subtitled
- Foreign Language / Chinese Subtitled
- Foreign Language / Spanish Subtitled
- Number and Quantity / Extend the properties of exponents to rational exponents
- Number and Quantity / Extend the properties of exponents to rational exponents
- Pre-Algebra / Square roots and approximations
- Pre-Algebra / The concept of exponents
Transcript
- 00:03
Here's an unshmoopy question you may find on an exam somewhere in life...
- 00:07
What does 9 to the one-half power plus the square root of 4 equal?
- 00:12
And here are the potential answers...
- 00:16
Ooh. Cool problem. So this "to the half" thing...
- 00:18
...is something we just have to know. "To the half" is the same as "the square root of."
Full Transcript
- 00:25
So nine to the 1/3 is the same as the cube root of 9...
- 00:29
...9 to the 1/4 is the 4th root of 9. Whatever that is.
- 00:33
So 9 to the half is the square root of nine, which is "3 times 3 equals 9" inside the
- 00:39
square root sign thingie here... so just 3. Like that.
- 00:43
So we have 3 plus the square root of 4, which is 2 times 2 inside the square root symbol,
- 00:50
which is... 2.
- 00:51
So the answer is 3 plus 2. As long as we're not living in George Orwell's negative utopia...
- 00:57
Big Brother says something else...then 3 + 2 is 5...
- 01:01
...and our answer is C.
- 01:02
As in, "Creamer."
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