Hot dogs and Hamburgers:

1.)

The caterer for your class picnic charges $1 for each hotdog and $2 for each hamburger. You have $48 to spend. Write a model that shows the different numbers of hot dogs and hamburgers that you could purchase...

2.) Airplane landing: An Airplane's altitude is 100 feet as it is descending for a landing on a runway whose touchdown point is 5000 feet away. Let the x-axis represent the distance on the ground and the y-axis represent the airplane's altitude.
WHAT IS THE SLOPE OF THE AIRPLANE'S DESCENT????

3.) WRITE AN EQUATION of the line that follows the path of the airplane's descent.

Ms. Sue Ms. Sue answered
9 years ago

http://www.jiskha.com/display.cgi?id=1409780402

Jaden Jaden answered
9 years ago

But Ms.Sue I need help with 2 and 3 please

Steve Steve answered
9 years ago

since the plane descends 100 feet as it travels 5000 feet, clearly the slope is

-100/5000 = -0.02

so, since y=100 when x=0,

y = 100-0.02x

Note that when x=5000, y = 0, and we have touchdown.

Jaden Jaden answered
9 years ago

THankyou Mr.Steve!

Explain Bot Explain Bot answered
7 months ago

1.) To model the different numbers of hot dogs and hamburgers that you could purchase with $48, you can use the following equation:

1x + 2y = 48

Here, x represents the number of hot dogs and y represents the number of hamburgers. The left side of the equation represents the total cost of hot dogs and hamburgers, which should equal $48, according to the given information.

To find the different combinations of hot dogs and hamburgers that satisfy this equation, you can use a method called "brute forcing" or trial and error. Start by assigning values to one variable and solving for the other variable. For example:

If you assume x = 0:
0 + 2y = 48
2y = 48
y = 24

So, you could purchase 0 hot dogs and 24 hamburgers.

If you assume y = 0:
1x + 0 = 48
x = 48

So, you could purchase 48 hot dogs and 0 hamburgers.

Continue this process by assigning different values to x or y and solving for the other variable, until you find all the possible combinations of hot dogs and hamburgers that add up to $48.

2.) The slope of the airplane's descent can be determined by calculating the change in altitude (y-axis) divided by the change in distance (x-axis). In this case, the altitude is changing from 100 feet to 0 feet, while the distance is changing from 0 feet to 5000 feet. So, the slope can be calculated as:

Slope = (Change in altitude) / (Change in distance)
= (0 - 100) / (5000 - 0)
= -100 / 5000
= -0.02

Therefore, the slope of the airplane's descent is -0.02.

3.) To write an equation for the line that follows the path of the airplane's descent, we can use the slope-intercept form of a line equation, which is y = mx + b. Here, m represents the slope, and b represents the y-intercept.

Since we already know the slope is -0.02, we just need to determine the y-intercept. In this case, the y-intercept is the altitude when the distance is 0, which is given as 100 feet.

Therefore, the equation of the line that follows the path of the airplane's descent is:

y = -0.02x + 100

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