In this exercise, determine whether the given statement is true or false. If the statement is false, make the necessary change(s) to produce a true statement.

To solve $x-9 \sqrt{x}+14=0$, we let $\sqrt{u}=x$.

During the course of treatment of an illness, the concentration of a drug (in micrograms per milliliter) in the bloodstream fluctuates during the dosing period of 8 hours according to the model

$$C(t)=15.4-4.7 \sin \left(\frac{\pi}{4} t+\frac{\pi}{2}\right), \quad 0 \leq t \leq 8$$

Use an identity to express the concentration $C(t)$ in terms of the cosine function. Note: This model does not apply to the first dose of the medication as there will be no medication in the bloodstream.

Choisissez la lettre correspondant a l expression qui complete chaque phrase

la telecommande ne marche plus - pour les parents - de belles personnalites attachantes dans les emissions de tele-realite - luxembourgeoise - emission de tele a regarder ensemble - de tele realite

Manon pense qu on decouvre.

One hour after x milligrams of a particular drug are given to a person, the change in body temperature T(x), in degrees Fahrenheit, is given by $T(x)=x^{2}\left(1-\frac{x}{9}\right) \quad 0 \leq x \leq 6$ The rate $T^{\prime}(x)$ at which T(x) changes with respect to the size of the dosage x is called the sensitivity of the body to the dosage. (A) When is $T^{\prime}(x)$ increasing? Decreasing? (B) Where does the graph of T have inflection points? (C) Sketch the graphs of T and T$^{\prime}$ on the same coordinate system. (D) What is the maximum value of $T^{\prime}(x)$?

How does capitalism differ from socialism and communism?

Explain the distinction between the terms FOB shipping point and FOB destination.

A ship is sailing in a north-east direction at a speed of 50 km/h. The destination of the ship is on a meridian 3,000 km east of the starting point. Note that speed is the absolute value of velocity:

(a) What is the velocity vector of the ship? (b)How long does it take the ship to reach its destination? (c)What is the total distance traveled from the starting point to its destination?

Vous regardez la tele avec Juliette . Elle a perdu ses lunettes et elle ne voit pas bien . Confirmez pour elle le personnage de l emission.

Modele : la chanteuse c est Natasha st - Pier ? oui c est elle

L animatrice c est Melissa Theuriau ?

Mrs. Sung gave a test in her trigonometry class. The scores were normally distributed with a mean of 85 and a standard deviation of 3. What percent would you expect to score between 88 and 91?

For August, Lanny Company had 25,000 units in BWIP, 40% complete, with costs equal to $36,000. During August, the cost incurred was$450,000. Using the FIFO method, Lanny had 125,000 equivalent units for August. There were 100,000 units transferred out during the month. The cost of goods transferred out is

a. $500,000.
b.$360,000.
c. $450,000.
d.$400,000.
e. $50,000.

Shannon observes two light pulses to be emitted from the same location, but separated in time by $3.00 \mu \mathrm{s}$. Kimmie observes the emission of the same two pulses to be separated in time by $9.00 \mu \mathrm{s}$. (a) How fast is Kimmie moving relative to Shannon? (b) According to Kimmie, what is the separation in space of the two pulses?

In an experiment, a group of fish was injected with living bacteria. Of those fish maintained at $28^{\circ} \mathrm{C}$, the percentage p that survived the infection t hours after the injection is given in the following table:

$$\begin{array}{llllll} t & 8 & 10 & 18 & 20 & 48 \\ \hline p & 82 & 79 & 78 & 78 & 64 \end{array}$$

Find the linear regression line of p on t.

Polonium-210 has a half-life of $138.4$ days, decaying by alpha emission. Suppose the helium gas originating from the alpha particles in this decay were collected. What volume of helium at $25^{\circ} \mathrm{C}$ and $735 \mathrm{mmHg}$ could be obtained from $1.0000 \mathrm{~g}$ of polonium dioxide, $\mathrm{PoO}_2$, in a period of $48.0 \mathrm{~h}$ ?

Describe the difference between F.O.B. shipping point and F.O.B. destination.