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3 years ago

What is gcf and lcm? idont understand

Mathematics

2 answers:

Nutka1998 [239]3 years ago

5 0

GCF means greatest common factor and LCM means Least common multiple.

pogonyaev3 years ago

5 0

GCF is greatest common factor, for example the GCF of 4 (1, 2, 4) and 12 (1, 2, 3, 4, 6, 12) is for because that is the biggest factor they have in common.

LCM is lowest common multiple, for example the LCM of 4 (4, 8, 12, 16, 20, 24, etc.) and 12 (12, 24, 36, 48, 60, etc.) is 12 because that is the smallest multiple they have in common.

You really need to know the difference between a factor and a multiple to understand it.

Hope this helps. :)

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Simplify the expression:<br> 3x4-8d+1

svetlana [45]

Answer:

-8d+13

Step-by-step explanation:

Add and Multiply all of the numbers without variables:

3x4+1

Use PEMDAS to solve (Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction):

3x4=12

12+1=13

Now you have your answer:

-8d+13

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2 years ago

Read 2 more answers

PLZ HELP find the y and x-intercepts. y=-2x+4 PLEASE EXPLAIN

SVEN [57.7K]

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2 years ago

How can one fourth x − 3 = one half x + 8 be set up as a system of equations?

Ganezh [65]

1/4x-3=1/2x+8
Then x=20.

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2 years ago

Can someone show me how to do Mean absolute deviation

morpeh [17]

To find the mean of a set, add up all of the numbers and divide by how many numbers you have. For the first set:
$\mu=\frac{10.7+2.4}2=\frac{13.1}2=6.55$
For the second set:
$\mu=\frac{13.7+2.5}2=\frac{16.2}2=8.1$

To find the mean absolute deviation, (MAD) find the mean of the distances of each number from the mean.
For the first set:
$MAD=\frac{|10.7-6.55|+|2.4-6.55|}2=\frac{4.15+4.15}2=\frac{8.3}2=4.15$
For the second set:
$MAD=\frac{|13.7-8.1|+|2.5-8.1|}2=\frac{5.6+5.6}2=\frac{11.2}2=5.6$
Note that when you only have two data points the mean is directly between them, which is why the distances are the same.

The means-to-MAD ratio is simply that, divide one by the other and that's it.
For the first set:
$6.55\div4.15=1.57831325$
For the second set:
$8.1\div5.6=1.44642857$

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2 years ago

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denis-greek [22]

Answer:

It's prime, the others are for English.

Step-by-step explanation:

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3 years ago