Answer:
D(t) = 2,280 - 60t
for D(15) compare the eqns and substitute the value of t.
D(15) = 2,280 - 60(15)
D(15) = 1,380 miles.
In the context of the qn, the Chang family travels 1,380 miles in 15 hours.
Answer:
7.9 ounces
Step-by-step explanation:
Hello, great question. These types are questions are the beginning steps for learning more advanced Equations.
For this problem we can use a simple Rule of Three property to solve this problem.
= ![\frac{x}{39.5 gl}](https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7B39.5%20gl%7D)
Now we cross multiply 3.5 by 39.5 and then divide the answer by 17.5 to get x like so,
![\frac{3.5oz*39.5gl}{17.5gl} = x](https://tex.z-dn.net/?f=%5Cfrac%7B3.5oz%2A39.5gl%7D%7B17.5gl%7D%20%3D%20x)
![7.9oz = x](https://tex.z-dn.net/?f=7.9oz%20%3D%20x)
Finally, we can see that 7.9 ounces should be added to the 39.5 gallons of gasoline.
I hope this answered your question. If you have any more questions feel free to ask away at Brainly.
Answer:
O A. g(x) = 2(x-4)(x + 7)
Answer:
-2x -y = -4
Step-by-step explanation:
the formula for calculating the equation of the line passing through two points is (look at the photo)
3 is x1, -2 is y1, -1 is x2 and 6 is y2
solve: x-3/-1-3 = y-(-2)/6-(-2)
x-3/-4 = y+2/8
transport the second fraction to the left of the equal, then it becomes negative:
x-3/-4 - y+2/8 = 0
do the mcm: -2(x-3)-(y+2) = 0
solve (minus in front of a parenthesis changes all signs inside it): -2x+6-y-2 = 0
-2x+4-y = 0
move the unknowns to the left of the equal:
-2x -y = -4