Consider the steady-state temperature distribution in a circular cylinder of radius 2 and height 3, with zero temperature at  and at and a temperature of 10 at

src="https://sciemce.com/media/2/ppg__cognero__Section_13.2_Polar_and_Cylindrical_Coordinates__media__3e3abdab-8339-473a-94ca-628445464af2.PNG" style="vertical-align:middle;" />. The mathematical model for this problem is
Select the correct answer.
?

A.
B.
C.
D.
E.

---

Answer: D

Mathematics

Solve the compound inequality and graph the solution set on a number line. Except for the empty set, express the solution set in interval notation.-4x + 1 ? 9 or 3x + 3 ? -9

A. (-?, ?)

B. [-4, -2]

C. [-2,?)

D. [-4, ?)

Perform the indicated operation. Write the result in standard form.(9 + 8i) - (-8 - 8i) - (-4 - 2i)

A. 21 - 2i B. 21 + 18i C. -3 - 2i D. 13 + 14i

Divide and then interpret the remainder.How many dozen eggs is 163 eggs?

A. 14 dozen with 7 eggs left over B. 13 dozen with 7 eggs left over C. 13 dozen with 5 eggs left over D. 14 dozen with 5 eggs left over

Solve the problem.If cot ? = -7.1, find the value of cot ? + cot (? + ?) + cot (? + 2?).

A. -21.3 + 3? B. -19.3 C. -21.3 D. undefined