True/False. A stack uses first-in, first-out (FIFO) processing.

Consider the following statements: class yClass class xClass: public yClass { { public: public: ** void one(); void one();** ** void two(int, int); xClass();** ** yClass(); private:** ** private: int z;** ** int a;** ** int b; };** }; Suppose the following statements are in a user program (client code): yClass y; xClass x; a. The private members of yClass are public members of xClass. ** True or False?** b. Mark the following statements as valid or invalid. If a statement is ** invalid, explain why.**

i. void yClass::one() ** {** ** cout << a + b << endl;** ** }** ii. y.a = 15; ** x.b = 30;** iii. void xClass::one() ** {** ** a = 10;** ** b = 15;** ** z = 30;** ** cout << a + b + z << endl;** } iv. cout << y.a << " " << y.b << " " << x.z << endl;

For the vector field $\mathbf{D}=\hat{\mathbf{R}} 3 R^{2}$, evaluate both sides of the divergence theorem for the region enclosed between the spherical shells defined by R=1 and R=2.

Rewrite each expression as a repeated multiplication in three ways: using X, $\cdot$, and parentheses.

a. $3^4$ b. $5^6$ c. $\left( \frac{ 1 }{ 2 } \right)^3$

In 2015, Quapau Products introduced a new line of hot water heaters that carry a one-year warranty against manufacturer’s defects. Based on industry experience, warranty costs were expected to approximate 5% of sales revenue. First-year sales of the heaters were $300,000. An evaluation of the company’s claims experience in late 2016 indicated that actual claims were less than expected—4% of sales rather than 5%. Assuming sales of the heaters in 2016 were$350,000 and warranty expenditures in 2016 totaled $12,000, what is the 2016 warranty expense?

Use completing the square to describe the graph of each function. Support your answers graphically. ƒ(x) = 2x² + 6x+7

A single die is rolled. Find the probability of rolling an odd number or a number less than 4.

Solve the equation.

$$\sqrt { x + 6 } - \sqrt { 2 x - 4 } = 0$$

How much force would you need to cause a 20-kilogram object to accelerate in a straight line to 20 m/s^2?

Determine the inverse Laplace transform $f(t)$ of the function $F(s)= \frac{5}{s^{2}+s-6}$.

Find the solution of the equation if the replacement sets are x: {1, 3, 5, 7, 9} and y: {6, 8, 10, 12, 14}. 4y = 32

Make an order-of-magnitude estimate of the quantity. -The width of the smallest object that can be located using sound in the range of human hearing.

A $8.0 \times 10^{4} \mathrm{kg}$ spaceship is at rest in deep space. Its thrusters provide a force of 1200 kN. The spaceship fires its thrusters for 20 s, then coasts for 12 km. How long does it take the spaceship to coast this distance?

In an electricity experiment, a $1.0 \mathrm{~g}$ plastic ball is suspended on a $60-\mathrm{cm}$-long string and given an electric charge. A charged rod brought near the ball exerts a horizontal electrical force $\vec{F}_{\text {elec }}$ on it, causing the ball to swing out to a $20^{\circ}$ angle and remain there. a. What is the magnitude of $\vec{F}_{\text {eles? }}$ ? b. What is the tension in the string?