Answer:
20
Step-by-step explanation:
This reads mathematically exactly how it is stated in words. The word "is" means =, the word "of" means multiply, and "what number" is x. Therefore, the equation from that looks like this: 16 = .80x. Don't forget that you cannot use a percent in an equation without first changing it to its decimal equivalency. Solve that for x by dividing both sides by .80 to get that x = 20
Answer:
Step-by-step explanation:
<em><u>Find the Rate of Change</u></em>
The rate of change = Δy/Δx
(20 - 16) / (8 - 6) = 4/2 = 2 gal / minutes
<em><u>Slope and Graph</u></em>
The graph is given below. It shows the various points plotted and labeled.
The box near the y axis should be labeled gallons [in the tank]
The box under the x axis (if you have such a thing) should be labeled Time in minutes.
Volume of the conical tank = 1/3pi*r^2 * h = 1/3pi * (10/2)^2 * 15 = 125pi cubic feet or 392.7 cubic feet = 392.7 * 7.48 gallons = 2937 gallons.
Volume of the hemispherical tank = 2/3pi * r^3 = 2/3pi * (5.5)^3 = 348.5 cubic feet = 348.5 * 7.8 gallons = 2606 gallons
Hence the conical tank will contain more chemicals
F(x) = -5x + 1
f(-3) = ?
subtitute x = -3 to the equation of the function:
f(-3) = -5 · (-3) + 1 = 15 + 1 = 16
The answer to the question is -9n - 6
