Answer:
80
Step-by-step explanation:
-4f(x)=-12x+44
-4f(-3)=36+44=80
The height of the triangle that forms the train track is 145,38 ft
<h3>How to calculate the height of the triangle?</h3>
To calculate the height of the triangle we must take into account the information provided by
- Base of the triangle = 1 mile = 5280 feet
- Railroad track expansion = 8 feet
According to the above, we must perform the following operations:
- 5280 ÷ 2 = 2640
- 8 ÷ 2 = 4
- 2640 + 4 = 2644
Subsequently, we must apply the Pythagorean theorem to find the height of the triangle having 2 data:
- Base: 2640ft
- Hypotenuse: 2644 ft
- 2644² = x² + 2640²
- x² = 2644² - 2640²
- x = .
- x =
- x = 145,38 ft
That makes x approximately 145,38 ft.
Learn more about triangles in: brainly.com/question/2269348
Answer:
I think its a cute angle im not sure
Here is some answers
1. 2x+3y=1,470
-2x -2x
---------------------
3y=-2x+1,470
---- --------
3 3
------------------
y=-2x+490
2. rise
-----
run
y=-2
---
1
Find 490 and either go up 2 down 1 or down 2 up 1 either way you will get a straight line.
3. f(x)=2x+490
Don-t know how to explain this :(
I'm confused after this question
Hope this helped a little