Suppose 15% of $x$ equals 20% of $y$. What percentage of $x$ is $y$ ?

Mathematics

1 answer:

viktelen [127]3 years ago

4 0

Answer:

Step-by-step explanation:

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Identify the scale factor.<br> Wingspan of airplane: 90ft<br> Wingspan of model of airplane: 6ft

Debora [2.8K]

The scale factor of the model of the airplane is 1 feet : 15 feet.

<h3>What is the scale factor?</h3>

A scale drawing is a reduced form in terms of dimensions of an original image / building / object. The scale drawing is usually reduced at a constant dimension using the scale factor.

Scale factor = original dimensions / dimensions of the scale drawing

90 / 6 = 15

1 : 15

To learn more about scale drawings, please check: brainly.com/question/26388230

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2 years ago

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Irina-Kira [14]

Answer: None.

Step-by-step explanation: It is translated up one unit and then reflected across the y axis

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3 years ago

Which function has the same y-intercept as the function?<br>

rosijanka [135]

Answer:

$6x -7y = 21$

Step-by-step explanation:

The $y$ -intercept of a line is the $y$ value when $x = 0$ . In the equation $y = \frac23 x -3 \\$ , we can solve for its equation when we plug in $x = 0$ .

Solving for $y$ when $x = 0$ :

$y = \frac23 x -3 \\ y = \frac23 (0) -3 \\ y = -3$ .

So the $y$ -intercept of the equation $y = \frac23 x -3 \\$ is $-3$ .

To find what equation has the same $y$ -intercept, we can do the same process for each equations given by the choices. However, I can see that the equation, $6x -7y = 21$ , has the $y$ -intercept. If in doubt, you can check for the solution below or solve each equations for yourself.

Solving for $y$ when $x = 0$ :

$6x -7y = 21 \\ 6(0) -7y = 21 \\ 0 -7y = 21 \\ -7y = 21 \\ \frac{-7y}{-7} = \frac{21}{-7} \\ y = -3$