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Nat2105 [25]
3 years ago
8

Seven times a number is equal to 12 more than 3 times the number. find the number.

Mathematics
1 answer:
ankoles [38]3 years ago
3 0

Answer:

the number is 3

Step-by-step explanation:

seven times a number is equal to 12 more than 3 times the number

7*n = 12+3*n

7n=12+3n

subtract 3n from each side

7n-3n = 12+3n-3n

4n = 12

divide each side by 4

4n/4 = 12/4

n =3

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Graph the system of inequalities presented here on your own paper, then use your graph to answer the following questions:
Anastasy [175]

Inequalities help us to compare two unequal expressions. (-6, 3) is not the solution to the system of inequalities.

<h3>What are inequalities?</h3>

Inequalities help us to compare two unequal expressions. Also, it helps us to compare the non-equal expressions so that an equation can be formed. It is mostly denoted by the symbol <, >, ≤, and ≥.

The graph of y ≥ −3x + 3 will be a solid line with the equation y=−3x + 3, this solid line signifies that the value on this line is also included in the solution. Since the symbol is '≥' therefore the area above the line will have the solutions.

The graph of y<(3/2)x -6 will be a dashed line with the equation y=(3/2)x - 6, this dashed line signifies that there is no solution on the line. since the inequality symbol is '<' therefore, the area under the dashed line will have all the solutions.

The area where both shaded areas meet is the area that will have all the possible solutions.

PartB:

y ≥ −3x + 3

3 ≥ -3(-6) + 3

3 ≥ 18 + 3

Since the above inequality is not satisfied, (-6, 3) is not the solution to the system of inequalities.

Learn more about Inequality:

brainly.com/question/19491153

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4 0
2 years ago
The answers too them
jasenka [17]

Answer:

$324.37

Step-by-step explanation:

First question already answered in other post.

Second Question:

Original price before discount and tax: $354

Discount: 15%

100% - 15% = 85% = 0.85

0.85 * $354 = $300.90

Tax: 7.8%

100% + 7.8% = 107.8% = 1.078

1.078 * $300.90 = $323.37

Answer: $324.37

5 0
3 years ago
Write the equation of the function graphed below:
Alona [7]

Answer:

I have a couple questions before I answer, what do the 2 dashes represent and are the 4s also under the square root?

3 0
3 years ago
Evaluate the function.<br><br> f(x)= -2x^2 + 8x - 10
Keith_Richards [23]

Answer:

i think its f(x)=-2(x-2)(by the power of 2)-2

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Plz help me on the attachments ASAP and show your work and check it.
Maslowich

Answer:

Have explanation!

Step-by-step explanation:

You supposed to find  related cordanites from table F and table G then plot the on the graph.

-Hope it helps! Good luck.

5 0
3 years ago
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