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3 years ago

a video game is on sale for 25 percent off the original price is $42. what is the discount? and what is the sale price?

Mathematics

2 answers:

san4es73 [151]3 years ago

6 0

Answer:

what he said haha

Step-by-step explanation:

sdas [7]3 years ago

4 0

Original price of the video game = $42
Percentage of discount = 25%
Amount of discount = 42 * (25/100) dollar
   = 42 * (1/4) dollar
   = (42/4) dollar
   = (21/2) dollar
   = $ 10.5
Actual sale price of the video game = (42 - 10.5) dollar
      = 31.5 dollar
So we come to know that the amount of discount given is $10.5 and the sale price of the video game is $31.5

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A telephone company charges a fixed monthly rate plus a rate per minute of usage. The company charges $120 for 100 minutes of us

Alecsey [184]

<h2>Answer</h2>

Draw a graph which joins the points (100, 120) and (50, 95) and has a slope = 0.50

<h2>Explanation</h2>

A graph of y against x means that x is the independent variable and y is the dependent variable. Notice that the charge (y) depends on the number of minutes (x). Therefore, the points that we are going to join to make our graph will have coordinates (x, y)

We know that the company charges $120 for 100 minutes, so x=100 and y=120. Therefore, our first point will be (100, 120)

We also know that the company charges $95 for 50 minutes, so x=95 and y=50. Therefore, our second point will be (50, 95)

Now, to find the slope between our tow points, we are going to use the slope formula: $m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

where

$(x_{1},y_{1})$ are the coordinates of the first point

$(x_{2},y_{2})$ are the coordinates of the second point

We know from our points that $x_{1}=100$ , $y_{1}=120$ , $x_{2}=50$ , and $y_{2}=95$ . So let's replace those values in our formula to find $m$

$m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

$m=\frac{95-120}{50-100}$

$m=\frac{-25}{-50}$

$m=\frac{1}{2}$

$m=0.50$

Now that we have our slope, we can use the point-slope formula to complete the equation of the line joining our two points

$y-y_{1}=m(x-x_{1})$

$y-120=0.50(x-100)$

$y-120=0.50x-50$

$y=0.50x+70$

7 0

3 years ago

Read 2 more answers

Please answer correctly !!!!! Will mark Brianliest !!!!!!!!!!!!!!

kicyunya [14]

Answer:

$x \approx 55.8$

Step-by-step explanation:

In order to solve this problem, one must use the trigonometric ratios. These ratios are the following,

$sin(\theta)=\frac{opposite}{hypotenuse}\\\\cos(\theta)= \frac{adjacent}{hypotenuse}\\\\tan(\theta)=\frac{opposite}{adjacent}$

Remember, each side is named relative to the angle, thus sides will attain different names depending on the angle which one sues to calculate with.

In this case, one is given the measure of the angle, and the measure of the side opposite to the angle. One is asked to find the measure of the side adjacent to the angle. Use the trigonometric ratio ( $tan$ ) to solve for the unknown. Substitute in the given values,