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3 years ago

Pls help me im so confused 5n-17=2n+1

Mathematics

2 answers:

denis-greek [22]3 years ago

8 0

Answer:

n=6

Step-by-step explanation:

5n-17=2n+1

Subtract 2n from each side

5n-2n-17=2n-2n+1

3n -17 = 1

Add 17 to each side

3n -17+17 = 1+17

3n = 18

Divide by 3

3n /3 = 18/3

n=6

tatiyna3 years ago

8 0

$\large \sf \star \: \green{Answer }\: \star$

$\small \sf \fbox{n = 6}$

<h3>Step-by-step explanation:</h3>

$\small \sf \mapsto \: 5n \: - 17 = 2n + 1$

subtract 2n from both side

$\small \sf \mapsto \: 5n \: - 2n \: - 17 = 2n \: - 2n + 1$

$\small \sf \: \mapsto \: 3n \: - 17 = 1$

Add 17 to both side

$\small \sf \mapsto \: 3n \: - 17 + 17 = 1 + 17$

$\small \sf \mapsto \: 3n \: = 18$

Divide 18 by 3

$\small \sf \: n \: = \frac{18}{3} \\$

n = 6

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3 years ago

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algol13

Answer:

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3 years ago

1. You are standing on top of a ridge using a clinometer trying to figure out how far your dog has wandered off in

olga_2 [115]

Given:

It is given that the ridge is 360 inches tall.

Assumptions:

Assume you are 170.1 cm tall which equals 67 inches tall, the height from your eye to the floor is $360+67 = 427$ inches.

The distance from your eye level to the bottom of the ridge is 427 inches.

Assume the angle A is 60°.

To find the distance from you to your dog.

Solution:

A right-angled triangle can be formed where the angle is 60°, the distance between you and the dog is the hypotenuse of the triangle and your height from the floor is the adjacent side of the triangle.

Assume the hypotenuse of the triangle measures x inches.

To determine the length of the hypotenuse, we determine the cos of the angle.

$cos \theta = \frac{adjacent side}{hypotenuse} .$

$cos A = \frac{427}{x} , x = \frac{427}{cos60} , cos60=0.5.$

$x=\frac{427}{0.5} = 854.$

So if the ridge is 360 inches tall and you are 67 inches tall and the angle A is 60°, the distance between your dog and you is 854 inches.

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3 years ago

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RUDIKE [14]

Answer:

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3 years ago

Question 9 Multiple Choice Worth 1 points)

beks73 [17]

Answer: $\bold{10 = \sqrt {\left( {x- 8 } \right)^2 + \left( {y - 9 } \right)^2 }}$

Step-by-step explanation:

Given:

The coordinates of Point A: (8, 9)

The coordinates of Point B are unknown: (x, y)

The distance from A to B is 10 units

Then, using the distance formula:

$AB = \sqrt {\left( {x- 8 } \right)^2 + \left( {y - 9 } \right)^2 }$

Therefore,

$10 = \sqrt {\left( {x- 8 } \right)^2 + \left( {y - 9 } \right)^2 }$

8 0

2 years ago