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Questions in Grade College

[Answered] The times it takes runners to complete a certain marathon are normally distributed with a mean of 4.6 hours and a standard deviation of 1.1 hours. What is the time for a runner with a [tex]$z$-score[/tex] of [tex]$-1.2$[/tex]? Enter your answer, rounded to the nearest hundredth, in the box.

[Answered] $11+\frac{2}{9} b=23$

[Answered] Consider the graph of some function $y=f(x)$. Evaluate $\lim _{x \rightarrow-4} f(x), \lim _{x \rightarrow 0} f(x)$, and $\lim _{x \rightarrow 6} f(x)$.

[Answered] Which of the following is equivalent to $|x-1|<5$? A. $x-1<5$ B. $5 C. $-5 D. $-5>x-1<5$

[Answered] To raise money for charity, Leo and his friends start the Pampered Pooch Pet Wash. The first day they are open, they forget to put up posters and only raise a little money. The next day, they hang posters all over the neighborhood and raise $56.75. In all, Leo and his friends raise $76.75 on the first two days they are open. Which equation can you use to find the amount of money Leo and his friends raise on the first day? A. [tex]$a+56.75=76.75$[/tex] B. [tex]$56.75 a=76.75$[/tex] C. [tex]$a-76.75=56.75$[/tex] D. [tex]$a-56.75=76.75$[/tex] Solve this equation for [tex]$a$[/tex] to find the amount of money Leo and his friends raise on the first day. $

[Answered] Factor completely: 100-(x-y)^2

[Answered] Fill in the blank to complete the statement with the appropriate word. After reading Shakespeare for several months, Thomas and decided to read the plays of Chekhov. A. I B. me

[Answered] [\left[\left(\frac{1}{2}\right)^{10}\right]^{-3}

[Answered] Directions: Drag each label to the correct heading. The New England, Middle, and Southern colonies developed different economies and social systems. Place the main characteristics of each region's economy and social structure under the correct heading. Economy based mostly on growing crops such as indigo and rice and on trade Developed strong shipbuilding and fishing industries Economy based primarily on trade and growing different kinds of grain Social position based mainly on wealth Social position based largely on ancestry and education Social position based mainly on land and plantation ownership New England Colonies Middle Colonies Southern Colonies

[Answered] The hardcover version of a book weighs 7 ounces while its paperback version weighs 5 ounces. Forty-five copies of the book weigh a total of 249 ounces. | Weight of Books | |---------------------------------------| | Number of Books | Weight per book (ounces) | Total Weight (ounces) | | Hard Cover | h | 7 | 7h | | Paperback | 45-h | 5 | x | | Total | 45 | | 249 | Which value could replace [tex]$x$[/tex] in the table? A. [tex]$40-h$[/tex] B. [tex]$50-h$[/tex] C. [tex]$5(45)-h$[/tex] D. [tex]$5(45-h)$[/tex]