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solniwko [45]
3 years ago
14

Simplify 2n - 7+3(4n-3) A.14n-16 B. -14n+12 C.-14n-13 D.14n-10

Mathematics
1 answer:
Hoochie [10]3 years ago
6 0
<span>Simplifying 2n + -7 + 3(4n + -3) = 0 Reorder the terms: 2n + -7 + 3(-3 + 4n) = 0 2n + -7 + (-3 * 3 + 4n * 3) = 0 2n + -7 + (-9 + 12n) = 0 Reorder the terms: -7 + -9 + 2n + 12n = 0 Combine like terms: -7 + -9 = -16 -16 + 2n + 12n = 0 Combine like terms: 2n + 12n = 14n -16 + 14n = 0 Solving -16 + 14n = 0 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '16' to each side of the equation. -16 + 16 + 14n = 0 + 16 Combine like terms: -16 + 16 = 0 0 + 14n = 0 + 16 14n = 0 + 16 Combine like terms: 0 + 16 = 16 14n = 16 Divide each side by '14'. n = 1.142857143 Simplifying n = 1.142857143</span>
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5. Se hizo una encuesta a estudiantes, de una carrera de un total de 6000 estudiantes encuestados el 75% le gusta leer. ¿Cuántos
Nataly_w [17]

La encuesta indica que de entre todos los estudiantes de una carrera, 4500 les gusta leer.

<h3 /><h3>Percentage</h3>

The percentage is the given definition for a fraction whose denominator is equal to 100. It is represented by %. See the example: \frac{30}{100} =\frac{3}{10}=0.3*100=30 \%.

The question gives:

  • 6000 students
  • 75% of students like to read

Then, you will have:

6000\cdot \frac{75}{100}\\ \\ 6000\cdot \frac{3}{4}\\ \\ \frac{18000}{4} =4500

Read more about the percentage here:

brainly.com/question/24304697

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8 0
2 years ago
The talent show committee sold a total of 530 tickets in advance. Student tickets cost $3each and the adult tickets cost $4 each
Serggg [28]
Students = 380
Adults = 150

You can get this by using x = students and y = adults. Then set up a cost equation of:

3x + 4y = 1740

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x + y = 530

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6 0
3 years ago
Read 2 more answers
Please help!!!!!!!!!!
Vikentia [17]

Answer:

557.8 square inches

each square is 5". the base is 4x4 squares- so 20 inches square. 20x20= 400sq inches.

the semicircle at the top is 20 inches in diameter, which makes the radius 10 inches.

pi× 10^2= 314.16.

duvide that by 2 to get a semicircle- 157.8

so, the total area is the 400+ 157.8, for a total area of 557.8 square inches

3 0
3 years ago
An enclosed gas exerts a pressure P on the walls of a container. This pressure is directly proportional to the temperature T of
tatyana61 [14]
Don't know if i'm right but I got 1/60

5 0
3 years ago
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In this figure, AB || CD and m/1 = 110°<br> A<br> 1/2 B<br> 4 3<br> What is mZ5?<br> 5/6<br> 8 7
Vsevolod [243]

Answer is 105 degrees.

Explanation:

Given two parallel lines AB and CD and a transversal cutting the two lines.

We know that when a transversal cuts two parallel line,

i) corresponding angles would be equal

ii) Interior angles total to 180

iii) alternate angles are equal.

In the picture given we have corresponding angles as

(2,6) .  Hence angle 2 = angle 6.

Angle 6 = 75 (given)

Hence angle 2 =75.

Angles 1 and 2 are supplementary because they form a linear pair.

Hence angle 1 = 180-75

Angle 1 =105

8 0
2 years ago
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