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Questions in Grade College

📝 Answered - $\frac{4}{x+16}-\frac{3}{x-16}=\frac{5 x}{x^2-256}$ a. Write the value or values of the variable that make a denominator zero. $x=$ $\square$ (Use a comma to separate answers as needed.) b. What is the solution of the equation? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The solution set is $\square$ 3. (Use a comma to separate answers as needed.). B. The solution set is ${x \mid x$ is a real number}. C. The solution set is $\varnothing$.

📝 Answered - An electric device delivers a current of [tex]$15.0 A$[/tex] for 30 seconds. How many electrons flow through it?

📝 Answered - Simplify the product $\frac{5}{n+1} \cdot \frac{n+1}{n+3}$

📝 Answered - A square is inscribed in a circle of diameter [tex]$12 \sqrt{2}$[/tex] millimeters. What is the area of the shaded region? Recall that in a [tex]$45^{\circ}-45^{\circ}-90^{\circ}$[/tex] triangle, if the legs each measure [tex]$x$[/tex] units, then the hypotenuse measures [tex]$x \sqrt{2}$[/tex] units. A. [tex]$(72 \pi-144) mm ^2$[/tex] B. [tex]$(72 \pi-72) mm ^2$[/tex] C. [tex]$(288 \pi-288) mm ^2$[/tex] D. [tex]$(288 \pi-144) mm ^2$[/tex]

📝 Answered - Which hormone triggers the kidneys to form more concentrated urine and prevent excess water loss? A. calcitonin B. oxytocin C. ADH D. PTH

📝 Answered - Structuralists approached the study of the mind by doing what? A. asking people about the conflicts they experienced during their childhood B. exploring the reasons why people behave in particular ways C. recording the thoughts people had as they engaged with stimuli

📝 Answered - A direct variation function contains the points $(-8,-6)$ and $(12,9)$. Which equation represents the function? A. $y=-\frac{4}{3} x$ B. $y=\frac{3}{4} x$ C. $y=\frac{3}{4} x$ D. $y=\frac{4}{3} x$

📝 Answered - Select the correct answer. What represents the value of the second-best alternative that a person gives up when making a choice? A. marginal spending B. marginal benefit C. opportunity cost D. marginal cost

📝 Answered - The function $N(t)=\frac{300}{1+299 e^{-0.36 t}}$ describes the spread of a rumor among a group of people in an enclosed space. $N$ represents the number of people who have heard the rumor, and $t$ is measured in minutes since the rumor was started. Which of the following statements are true? Check all that apply. A. There are 300 people in the enclosed space. B. Initially, only one person had heard the rumor. C. The rumor spreads at a constant rate of 0.36 people per minute. D. It will take 30 minutes for 100 people to hear the rumor.

📝 Answered - Which best describes the meaning of the statement "If A, then B"? A. If A is false, then B might be false. B. If A is true, then B must be true. C. If A is false, then B must be false. D. If A is true, then B might be true.