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mrs_skeptik [129]
3 years ago
7

If 6x +3= 2x+ 19, then x =

Mathematics
2 answers:
stepladder [879]3 years ago
6 0

Answer:

x = 4

Step-by-step explanation:

6x + 3 = 2x + 19  ------ subtract 3 both sides

6x + 3 - 3 = 2x + 19 - 3   simplify

6x = 2x + 16         ------ subtract 2x both sides

6x - 2x = 2x + 16 - 2x      simplify

4x = 16

x = 16 / 4

x = 4

Vsevolod [243]3 years ago
3 0

Answer: x = 4

Step-by-step explanation: If the variable appears on both sides of the equation, we put the variables together on one side of the equation and the numbers together on the other side of the equation.

So let's put our variables on the left side by first subtracting

2x from both sides of the equation to get 4x + 3 = 19.

Next, we subtract 3 from both sides to get 4x = 16.

Finally, we divide both sides by 4 to get x = 4.

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Grace is at a bookstore with $75 to spend. She has plans to buy a reference book that cost $18 and some novels that cost $12 how
elixir [45]

Answer:

Step-by-step explanation:

12x+18=75

-18=-18

12x= 57

Divide by 12.

57/12=4.75

Grace can buy 5 books including the reference book

7 0
3 years ago
Your friend is about to begin an introductory chemistry course at his university. The course has collected data from students on
Minchanka [31]

Answer:

<em>The percentage of students sudy 34 hours or more is 0.62%</em>

Step-by-step explanation:

<u>The Normal Distribution</u>

The bell curve or normal distribution is frequently used to model the probability of natural random events. The normal distribution N(\mu,\sigma) is characterized by two parameters:

\mu is the mean value

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The study times in hours for the final exam is modeled as a normal distribution N(24,4). We are required to find the percentage of students study 34 hours or more, or P(X>34).

The values for the cumulative probability are given by tables or digital means like Excel where we can get the left-tail or P(X<Xo). To compute the right-tail or P(X>Xo) we use this relation

P(X>Xo) =1-P(X

The Excel formula to find the left-tail cumulative probability is called

NORM.DIST(x,mean,standard_dev,cumulative)

To solve the question, we used:

NORM.DIST(34,24,4,TRUE)=0.9938

Thus:

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6 0
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Arisa [49]

Answer:

hope it will help you to

hope it will help you

8 0
2 years ago
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Anna71 [15]
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4 years ago
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AURORKA [14]

Answer:

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Step-by-step explanation:

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3 years ago
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