ShmoopTube
Where Monty Python meets your 10th grade teacher.
Search Thousands of Shmoop Videos
CAHSEE Math 1.2 Algebra I 236 Views
Share It!
Description:
CAHSEE Math Algebra I: Drill 1, Problem 2. Find the negative reciprocal.
Transcript
- 00:03
Here’s an unshmoopy question to write about in your diary…
- 00:07
What is the negative reciprocal of negative b over 2a?
- 00:10
And here are the potential answers…
- 00:16
So… what is this question asking?
- 00:18
Can we find a reciprocal? Piece o’ cake.
Full Transcript
- 00:21
A reciprocal, remember, is just the flip-side of a fraction.
- 00:24
And any normal number, by the way, is a fraction.
- 00:27
That is, the number 4 is 4 over 1… so its reciprocal is 1 over 4 or one-fourth.
- 00:36
So do the same here with the fraction given… negative b over 2a.
- 00:41
BUT it also asks for the NEGATIVE reciprocal. A negative of a negative is a positive…
- 00:47
and we now have just 2a over b…
- 00:50
…so the answer is B.
- 00:52
As in, “Sponsored by Bounty – the quicker picker-upper.”
Up Next
CAHSEE Math: Algebra and Functions Drill 5, Problem 3. Solve the equation.
Related Videos
Statistics, Data, and Probability I: Drill Set 1, Problem 1. What is the mean yearly salary?
Statistics, Data, and Probability I: Drill Set 1, Problem 2. What is the median length of these writing utensils?
CAHSEE Math Statistics, Data, and Probability I: Drill Set 1, Problem 3. The mode of the number of days in each month for a single non-leap year is...
Statistics, Data, and Probability I: Drill Set 1, Problem 4. How old was the final person to join?