Modeling processes with saturation Abbreviations:
DE Differential Equation
ODE Ordinary Differential Equation IC Initial Condition(s)
IVP Initial Value Problem

A tank with five-gallon capacity is filled at a constant rate of fifteen gallon per minute and

drained at the same rate.
The inflow has salt concentration of twenty grams of salt per gallon.
Once the incoming salt brine is in the tank, the instant mixing assumption is imposed. Initially, there is only pure water in the tank. But as the time passes, the amount of salt in

the tanks changes (we will express this amount in grams).
Set up and solve the ODE IVP in order to answer the questions:
(a) How much salt will we have in the tank after 3 minutes? [A]
(b) In the long run, how much salt do we expect the tank to contain? [B]
(c) How soon will the amount of salt in the tank reach half of its asymptotic value? [C]

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step-by-step explanation:

the results from a pre-test for students for the year 2000 and the year 2010 are illustrated in the box plot. what do these results tell us about how students performed on the 29 question pre-test for the two years?

if we compare only the lowest and highest scores between the two years, we might conclude that the students in 2010 did better than the students in 2010. this conclusion seems to follow since the lowest score of 8 in 2010 is greater in value than the lowest score of 6 in 2000. also, the highest score of 28 in 2010 is greater in value than the highest score of 27 in 2000.

but the box portion of the illustration gives us more detailed information. the middle bar in each box shows us that the median score of 20 in 2000 is greater in value than the median score of 17 in 2010. further, we note that the box and whiskers divide the illustration into four pieces. each of these four pieces represents the same portion of students. so, the upper half of the students in 2000 scored in the same score range as the upper one-fourth of the students in 2010, see the illustration at a score of 20.

by considering the upper one-fourth, upper half, and upper three-fourths instead of just the lowest and highest scores, we would conclude that the students as a whole did much better in 2000 than in 2010. we would conclude that as a whole the students in 2010 are less prepared than the students in 2000.

in this section, we discuss box-and-whisker plots and the five key values used in constructing a box-and-whisker plot. the key values are called a five-number summary, which consists of the minimum, first quartile, median, third quartile, and maximum.

step-by-step explanation:

a. 32 degrees

step-by-step explanation:

here we have to use the rule.

m∠e = 1/2 (major arc - minor arc)

m∠e = 1/2 (212 - 148)

m∠e = 1/2 (64)

m∠e = 32 degrees

answer: a. 32 degrees

you

b

step-by-step explanation: