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SAT Math 1.5 Algebra and Functions. If f (x) = x2 - 16 and g(x) = x4 - 256, what is f of x divided by g of x?
SAT Math 3.2 Numbers and Operations 1262 Views
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Description:
SAT Math 3.2 Numbers and Operations
Transcript
- 00:03
Here's your shmoop math du jour:
- 00:05
What is the square root of 5.206 times 10 to the seventh to the nearest hundredth?
- 00:11
Here are your options...
- 00:17
Okay, so we need to figure out the value of the
- 00:19
square root of a number to the closest hundredth.
Full Transcript
- 00:22
Let's repeat the most important part of that... it'll save us a whole lot of work.
- 00:27
TO THE CLOSEST HUNDREDTH.
- 00:29
One more time, with feeling... TO THE CLOSEST HUNDREDTH
- 00:35
Only one of the answers is a number that includes the right number of
- 00:39
numbers after the decimal point... to the hundredths place.
- 00:46
Now, if we can remember what the hundredths place is,
- 00:48
we can answer this question in a snap.
- 00:53
If not, we'll tell you just this once. You're on your own for the test, though.
- 00:57
The hundredTHs place, with the "T-H" sound
- 01:00
at the end, is two spots to the right of the decimal point.
- 01:03
Not three, like its buddy the thousandths place, or one, like the tenths place.
- 01:08
So which of the answer choices has two numbers after the decimal point?
- 01:11
Option D, 7215.26.
- 01:15
Saves us a lot of time punching numbers on our calculator, doesn't it?
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