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3 years ago

Please tell the LCM of the following -

Mathematics

2 answers:

Alex17521 [72]3 years ago

6 0

Answer:

Step-by-step explanation:

2) 24 = 2 *2*2*3 = 2³ * 3

54 = 2*3*3*3 = 2 * 3³

LCM = 2³ * 3³ = 8*27 = 216

12) 14 = 2 *7

25 = 5*5 = 5²

LCM = 2*7 * 5² = 14*25 = 350

37) 12 = 2*2*3 = 2² * 3

32 = 2*2*2*2*2 =2^5

LCM = 2^5 * 3 = 32*3 = 96

LCM -> common number with highest power and the rest all numbers

Arada [10]3 years ago

4 0

Answer:

Below.

Step-by-step explanation:

I won't do all of these for you but I'll show you the general method.

First write each number as prime factors.

For example number 7:

LCM of 24 and 34.

24 = 2 * 2 * 2 * 3

34 = 2 * 17

The LCM is the multiple of all these factors EXCEPT if there is a duplicate number you only use it once.

There is one duplicate here - the 2 ( in bold) so we only use this once.

So the LCM = 2 * 2 * 2 * 3 * 17 = 408.

Number 1:

13, 25

13 = 13

25 = 5 * 5

There are no duplicates so the LCM = 13 * 5 * 5 = 325.

Number 18:

15, 84

15 = 3 * 5

84 = 2 * 2 * 3 * 7

Number 3 is common to both sets so it is only used once:

LCM = 2 * 2 * 3 * 5 * 7 = 420.

Number 40:

18, 48

18 = 2 * 3 * 3

48 = 2 * 2 * 2 * 2 * 3

There are 2 sets of duplicates here, 2 and 3 .

LCM = 2 * 2 * 2* 2 * 3 * 3 = 144.

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3 years ago

Jaya goes out to lunch. The bill, before tax and tip, was $11.15. A sales tax of 3% was

iogann1982 [59]

Answer:

$1.49

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3 years ago

You work a part-time job at $7.85/hr for 10 hours per week. Your deductions are FICA (7.65%), federal tax withholding (9.8%), an

Dmitrij [34]

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3 years ago

If the mass of a material is 49 grams and the volume of the material is 7 cm^3, what would the density of the material be?

inysia [295]

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To help you remember - my teacher told us to remember "We <span>♡ density," and the heart stands for </span> $\frac{m}{v}$ , or $\frac{mass}{volume}$ . Cheesy, but it works!<span>
</span>
Back to the problem:
We know the mass if 49g and the volume is 7 $cm^{3}$ , so plug these values into the equation for density:
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Answer: The density is 7 g/ $cm^{3}$

4 0

3 years ago

Please tell the LCM of the following -​

Please tell the LCM of the following -