Answer:
$4.04 per kilogram of cement.
Step-by-step explanation:
36.36/9 = 4.04
Answer:
20.903
Step-by-step explanation:
Answer:
K = 9
X = 7/4
Step-by-step explanation:
<h2>
Solving for K:</h2><h2>
![\frac{36x - 63}{4x - 7} = k](https://tex.z-dn.net/?f=%20%5Cfrac%7B36x%20-%2063%7D%7B4x%20-%207%7D%20%20%3D%20k)
</h2>
![\frac{9(4x - 7)}{4x - 7} = k](https://tex.z-dn.net/?f=%20%5Cfrac%7B9%284x%20-%207%29%7D%7B4x%20%20-%207%7D%20%20%3D%20k)
![9 = k](https://tex.z-dn.net/?f=9%20%3D%20k)
<h2 />
There are 60 minutes in 1 hour, therefore, if the car has a speed of 60 kilometers per hour, that simply means, 60 kilometers per 60 minutes.
now, if the car covers 60 kilometers in 60 minutes, that means in 1 minute, it covers 1 kilometer.
now, if we want to cover every kilometer, not in 1 minute, but half-minute faster than that, that means 1 - 1/2, or 1/2 minute, so, what speed is needed to cover 1 kilometer in just half-minute then?
well, you just need to increase your kilometer per minute from 1 minute, to 1/2, that is , 1 kilometer per 0.5 minutes.
if you can cover 1 kilometer in 0.5 minutes, how many can you cover in 60 minutes or 1 hour? in 1 minute you can cover 2 kilometers at that speed, in 60 minutes then, you can cover 120 kilometers, twice as many.
120 km/h.