Answer:
-26
Step-by-step explanation:
9+33-6
calculate the sum of the positive numbers
42-6
subtract the numbers
36 divided by 6-32
6-32
-26
Answer:
6
Step-by-step explanation:
Step 1:
3 ( 2x - 5 ) - 4x + 8 = - 1
Step 2:
5x - 15 - 4x + 8 = - 1
Step 3:
x - 15 + 8 = - 1
Step 4:
x - 7 = - 1
Answer:
x = 6
Hope This Helps :)
Using linear function concepts, it is found that:
- a) It costs $0.1 for each kilowatt hour of electricity used in excess of 250 kWh.
- b) f(90) = 46.6, which is the cost of 340 kWh of consumption in a month.
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A <em>linear function </em>has the format given by:
![y = mx + b](https://tex.z-dn.net/?f=y%20%3D%20mx%20%2B%20b)
In which:
- m is the slope, which is the rate of change, that is, how much y changes when x changes by 1.
- b is the y-intercept, which is the value of y when x = 0.
The equation for the cost of h kilowatt hours (kWh) of electricity used in excess of 250 kWh is of:
![C = f(h) = 37.6 + 0.1h](https://tex.z-dn.net/?f=C%20%3D%20f%28h%29%20%3D%2037.6%20%2B%200.1h)
Item a:
- The slope is of
, which means that it costs $0.1 for each kilowatt hour of electricity used in excess of 250 kWh.
Item b:
![f(90) = 37.6 + 0.1(90) = 37.6 + 9 = 46.6](https://tex.z-dn.net/?f=f%2890%29%20%3D%2037.6%20%2B%200.1%2890%29%20%3D%2037.6%20%2B%209%20%3D%2046.6)
250 + 90 = 340.
f(90) = 46.6, which is the cost of 340 kWh of consumption in a month.
A similar problem is given at brainly.com/question/24808124
It gained 2 lb. because if you subtract 8-6 you would get 2. So Arfus gained 2 lb.
2 1/2 is also 2.5, therefore to calculate each liter, just 60/2.5, so the answer is $24