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3 years ago

-3(x+n) = x what is x

Mathematics

1 answer:

svp [43]3 years ago

8 0

Answer:

x = -3n/4

Step-by-step explanation:

in order to solve for x in this expression we would open the bracket with -3 according to BODMAS rule. then we would evaluate for the value of x

-3(x+n) = x what is x

-3x-3n= x

-3x = x + 3n

-3x -x = 3n

-4x = 3n

divide both sides by the coefficient of x which is -4

-4x/-4 = 3n/-4

x = -3n/4

therefore the value of x in the expression -3(x+n) = x is evaluated to be

x = -3n/4

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3 years ago

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2 years ago

A box in a supply room contains 18 compact fluorescent lightbulbs, of which 6 are rated 13-watt, 8 are rated 18-watt, and 4 are

V125BC [204]

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b) Probability(each bulb different rating)

= 0.24

Step-by-step explanation:

There are 6 13watts bulbs

8 18watts bulbs

4 23watts bulbs

Total bulbs = 18

a) Probability that all 3 bulbs are 18watts

Number of ways of pulling 3 bulbs = 18!/(3!×15!) = (6.4×10^15)/7.846×10^12) = 815 ways

Different ways of pulling 13watts bulbs out of 6 = 6!/(2!×4!)= 720/48=15ways

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6 0

2 years ago

Read 2 more answers

Elanso [62]

Pile Y has the greater mean number of pages per book because it is 5 books less than pile W.

<h3>How to calculate greater mean number of pages?</h3>

From the complete information, we can deduce that the number of each pile of book is given as follows:

Red books = 10 × 5 = 50 red books.

Blue books = 5 × 5 = 25 blue books.

Therefore, total books in pile W = 50 + 25 = 75 books.

Mathematically, the mean for each pile can be calculated by using the following formula:

Mean = [F(x)]/n

Mean = 75/10

Mean = 7.5.

Red books = 10 × 5 = 50 red books.

Mean = [F(x)]/n

Mean = 50/5

Mean = 10.

In conclusion, pile Y has the greater mean number of pages per book because it is 5 books less than pile W.

Read more on mean here: brainly.com/question/9550536

#SPJ1

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1 year ago