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The Number System Videos 5 videos

ACT Aspire Math: Finding the Prime Factorization of 120
4 Views

Which of the following is the prime factorization of 120?

ACT Aspire Math: Ordering Numbers from Least to Greatest
7 Views

Which of the following lists of numbers is ordered from least on the left to greatest on the right?

ACT Aspire Math: Knowing (and Using) the Rules of Divisibility
12 Views

Place one of the following numbers into the ones digit of the number 428, while moving the other digits so that the 4 is in the position of the tho...

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ACT Aspire Math: Approximating Square Roots 9 Views


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Description:

What is the approximate value of ?


Transcript

00:02

Okay C t s baring math There's another drill for

00:04

you Here we go What is the approximate value of

00:08

the square root of fifteen Please Well it's a number

00:16

fifteen is not a perfect square Taking its square rude

00:19

makes it angry and irrational Usually result gives us an

00:22

infinite number of non repeating decimal places An irrational number

00:26

But we can still estimate in perfect square roots Right

00:29

Well the best strategy is to go through the squares

00:31

until he passed the number we want Once that happens

00:33

we know that we're close to the roots suffering since

00:35

three squared is nine were not in fifteen yet So

00:38

given that singers shot there like we said four square

00:40

to sixteen who too far But it's good enough for

00:43

our purposes because now we know the square root of

00:45

fifteen has to be between three and four and the 00:00:49.143 --> [endTime] answer is b that's it Bye

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