Questions in Grade College

Questions in Grade College

[Free] Simplify the complex numbers: $(-2-4 i)+(1+6 i)$

[Free] A skateboarder is performing tricks on a specially designed ramp. The height, [tex]h[/tex], in meters, of the skateboard above the ground can be modeled by the function [tex]h(t)=2 t^2-8 t+10[/tex], where [tex]t[/tex] represents the time in seconds since the skateboarder started the trick. Remember to show your work for full credit. a. Find the vertex of the quadratic function and interpret its meaning in the context of the problem. b. Determine the height of the skateboard when the skateboarder starts the trick. Explain. c. Determine when the skateboard will be at ground level. d. Determine the range of times during which the skateboard will be at least 5 meters above the ground. e. What would be the height of the skateboard after 3 seconds?

[Free] When performing an instant OFF test, all sources of cathodic protection current must be: a. Left on except the one closest to the surveyor b. Interrupted at the same time c. Set to the same output current level d. Set to the same output voltage level

[Free] Which of the following terms describes a tendency of less favorable insurance risks to seek insurance more often than standard risks? A. Risk avoidance B. Adverse selection C. Exposure D. Field underwriting

[Free] What are the principles of design? Give its meaning.

[Free] Which of the following statements concerning term limits is correct? A. The movement to impose term limits was popular in the 1800s. B. The concept of term limits is not popular among the public. C. Many states passed laws to limit the terms of members of state legislators. D. The Supreme Court struck down state laws limiting the terms of members of Congress.

[Free] A wants to build a fence around a rectangular vegetable garden so that it has a width of at least 10 feet. A can use a maximum of 150 feet of fencing. The system of inequalities that models the possible lengths, $l$, widths, $w$, of the garden is shown. $\begin{aligned} w & \geq 10 \\ 2 l+2 w & \leq 150 \end{aligned}$ Which length and width are possible dimensions for the garden? A. $l=20 ft ; w=5 ft$ B. $l =20 ft ; w=10 ft$ C. $l=60 ft ; w=20 ft$ D. $l=55 ft ; w=30 ft$

[Free] Select the statement that is NOT equivalent to: "It is not true that England and Africa are both countries." A. If England is a country, then Africa is not a country. B. England is not a country and Africa is not a country. C. England is not a country or Africa is not a country. D. If Africa is a country, then England is not a country.

[Free] Training must be each of the following EXCEPT: A. Executed by qualified person. B. Documented C. Sporadic D. Maintained

[Free] The surface area of a cube is increasing at a rate of [tex]$10 cm^2 s^{-1}$[/tex]. Find the rate of increase of the edge when the edge is 12 cm.