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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?
The Classic: Solve for X 428 Views
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Description:
ACT Math: Pre-Algebra Drill 7, Problem 3. Solve for x.
- Pre-Algebra / Simple linear equations with one variable
- Product Type / ACT Math
- Foreign Language / Spanish Subtitled
- Foreign Language / Arabic Subtitled
- Foreign Language / Korean Subtitled
- Foreign Language / Chinese Subtitled
- Algebra / Solve equations and inequalities in one variable
- Algebra / Solve equations and inequalities in one variable
- Algebra / Solve equations and inequalities in one variable
- Algebra / Solve equations and inequalities in one variable
- Pre-Algebra / Linear equations in one variable
Transcript
- 00:03
Do you hear the people shmoop...shmooping the math of angry men...
- 00:08
Solve for x: 2 times the quantity 3x plus 2x minus 5 minus the quantity 6x plus 1 equals 1.
- 00:14
And here are the potential answers...
- 00:21
OK so what is this question asking?
- 00:27
It's just a big fat distribution and simplification problem.
Full Transcript
- 00:30
Let's start by dieting down the parentheses with respect to our friend Mr. PEMDAS.
- 00:37
Multiply across the 2 here and we get 2 times 3x is 6x.
- 00:41
2 times 2x is 4x and 2 times negative 5 is negative 10...
- 00:47
...then just keep going to get rid of the 2nd set of parentheses by allocating the negative
- 00:51
sign to get negative 6x minus 1.
- 00:54
And the rewritten problem looks like this:
- 00:58
Now we just combine terms. The 6x's cancel each other out, so just cross 'em off... and
- 01:02
we have 4x minus 11 equals 1.
- 01:04
Add 11 to both sides and we have 4x equals 12. Divide both sides by 4 and we have x equals...3.
- 01:12
Answer: D.
- 01:13
As in, 'Diet shakes.'
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