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3 years ago

Using distributive property what expression is equal to 7(3x-2)

Mathematics

2 answers:

Black_prince [1.1K]3 years ago

7 0

Answer:

21 x - 14

Step-by-step explanation:

7 ( 3 x -2 )

Using distributive property,

multiply both by 7

7 × 3 x - 7 × 2

21 x - 14

$\:$

grin007 [14]3 years ago

4 0

21x - 14
Explanation:
you distribute the 7, and first multiply it by 3x to get 21x. Then you distribute the 7 and multiply it by the -2 to get -14.

Hope this helps!

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Answer:

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Step-by-step explanation:

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Rainbow [258]

To solve this problem you must apply the proccedure shown below:

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3 years ago

1/4 x 2/5 x 3/6 x 4/7 x 5/8 x 6/9 x 7/n=?

postnew [5]

Answer:

c. $\frac{1}{12n} = {[12n]}^{-1}$

Step-by-step explanation:

$[\frac{1}{4}][\frac{2}{5}][\frac{1}{2}][\frac{4}{7}][\frac{5}{8}][\frac{2}{3}][\frac{7}{n}] = \frac{560}{6720n} = [12n]^{-1} = \frac{1}{12n}$

$\frac{2}{3} = \frac{6}{9}\\ \\ \frac{1}{2} = \frac{3}{6}$

* To make this simpler, reduce these two fractions in lowest terms.

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3 years ago

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Slav-nsk [51]

Answer:

1680

Step-by-step explanation:

Considering repeatition is not allowed.

We can use permutation to reach to the required answer.

Consider four digits to be placed in four boxes. Now for the number to be odd, unit digit must be odd. Therefore, unit digit can only be filled by 1, 3, 5,7, or 9. That is 5 ways. Now, other three boxes can be filled with 8, 7 and 6 ways respectively.

Therefore, Total numbers = 5×8×7×6 = 1680

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3 years ago