ron’s aunt treated ron and his friends to ice cream. she spent $17 on ice cream. both the chocolate cones and vanilla cones were
1 answer:
You might be interested in
a) You are told the function is quadratic, so you can write cost (c) in terms of speed (s) as
... c = k·s² + m·s + n
Filling in the given values gives three equations in k, m, and n.
Subtracting each equation from the one after gives
Subtracting the first of these equations from the second gives
Using the next previous equation, we can find m.
Then from the first equation
[tex]28=100\cdot 0.01+10\cdot (-1)+n\\\\n=37[tex]
There are a variety of other ways the equation can be found or the system of equations solved. Any way you do it, you should end with
... c = 0.01s² - s + 37
b) At 150 kph, the cost is predicted to be
... c = 0.01·150² -150 +37 = 112 . . . cents/km
c) The graph shows you need to maintain speed between 40 and 60 kph to keep cost at or below 13 cents/km.
d) The graph has a minimum at 12 cents per km. This model predicts it is not possible to spend only 10 cents per km.
Answer:
<h3>28 4/7 % ≈ 29%</h3>Step-by-step explanation:
4 kg - weight of sugar
10 kg - mass of water
4kg + 10kg = 14kg - weight of the syrup
The sugar is 2/7 of the weight of the syrup.
Convert to the percentage: