# College math questions and answers

Recent questions in Post Secondary
geduiwelh 2020-11-01

### class council determined that its profit from the upcoming homecoming dance is directly related to the ticket price for the dance. Looking at past dances, the council determined that the profit pp can be modeled by the function $p\left(t\right)=-12{t}^{2}+480t+30$, where tt represents the price of each ticket. What should be the price of a ticket to the homecoming dance to maximize the council's profit? Price

Jerold 2020-11-01

### Use sigma notation to express the following 1 - 2 + 3 - 4 + 5 - 6 + 7 - 8

Cheyanne Leigh 2020-11-01

### Given f(x)=6x+5​, describe how the graph of g compares with the graph of f. g(x)=6(0.2x)+5 Select the correct choice below, and fill in the answer box to complete your choice. A. The graph of​ g(x) is translated _ ​unit(s) to the left compared to the graph of​ f(x). B. The graph of​ g(x) is translated _ ​unit(s) down compared to graph of​ f(x). C. g(x) has a scale factor of _ compared to​ f(x). Because it scales the vertical​ direction, the graph is stretched vertically. D. g(x) has a scale factor of _ compared to​ f(x). Because it scales the vertical​ direction, the graph is compressed vertically. E. g(x) has a scale factor of _ compared to​ f(x). Because it scales the horizontal​ direction, the graph is stretched horizontally. F. g(x) has a scale factor of _ compared to​ f(x). Because it scales the horizontal​ direction, the graph is compressed horizontally. G. The graph of​ g(x) is translated _ ​unit(s) to the right compared to the graph of​ f(x). H. The graph of​ g(x) is translated _ ​unit(s) up compared to graph of​ f(x).

iohanetc 2020-11-01

### Describe the transformations of $f\left(x\right)=\sqrt{3}\left\{x\right\}$ and $h\left(x\right)={x}^{3}$ that result in the functions listed below. and and

e1s2kat26 2020-11-01

### Let $\gamma =\left\{{t}^{2}-t+1,t+1,{t}^{2}+1\right\}\phantom{\rule{1em}{0ex}}\text{and}\phantom{\rule{1em}{0ex}}\beta =\left\{{t}^{2}+t+4,4{t}^{2}-3t+2,2{t}^{2}+3\right\}be\phantom{\rule{1em}{0ex}}\text{or}\phantom{\rule{1em}{0ex}}deredbasesf\phantom{\rule{1em}{0ex}}\text{or}\phantom{\rule{1em}{0ex}}{P}_{2}\left(R\right).$ Find the change of coordinate matrix Q that changes

vazelinahS 2020-10-31

### A sample of 2861 Bloomberg Businessweek subscribers in North America were used to gather data for this study. Fifty-nine percent of the respondents indicated an annual income of $\mathrm{}75,000$ or more, and 50% reported having an American Express credit card. a. What is the population of interest in this study? b. Is annual income a categorical or quantitative variable? c. Is ownership of an American Express card a categorical or quantitative variable?

ka1leE 2020-10-31

### Use integration by parts to find the Laplace transform of the given function $f\left(t\right)=4t\mathrm{cos}h\left(at\right)$

fortdefruitI 2020-10-31

### Use the Laplace transform to solve the given initial-value problem$y{}^{″}+2{y}^{\prime }+y=0,y\left(0\right)=1,{y}^{\prime }\left(0\right)=1$

Tahmid Knox 2020-10-31

### How to solve for the equation${y}^{‴}+4{y}^{″}+5{y}^{\prime }+2y=4x+16$using laplace transform method given that

Bevan Mcdonald 2020-10-31

### Find the laplace transform of the following $f\left(t\right)=t{u}_{2}\left(t\right)$ Ans. $F\left(s\right)=\left(\frac{1}{{s}^{2}}+\frac{2}{s}\right){e}^{-2s}$

Cheyanne Leigh 2020-10-31

### How do you find the number k by looking at the graph of

Wierzycaz 2020-10-28

### A manager at ACME Equipment Sale and Rental wondered how offering a free two-year service warranty on its tractors might influence sales. For the next 500 customers who expressed interest in buying a tractor, 250 were randomly offered a warranty, and the rest did not receive. Ninety-three of those offering a warranty, and fifty-four of those not offering a warranty ended up buying a tractor. a. Construct a $95\mathrm{%}$ confidence interval for the difference between the proportions of customers purchasing tractors with and without warranties. Be sure to check all necessary assumptions and interpret the interval. b. Test the hypothesis that offering the warranty increases the proportion of customers who eventually purchase a tractor. Be sure to check all necessary assumptions, state the null and alternative hypotheses, obtain the p-value, and state your conclusion. Should a manager offer a warranty based on this test?

Dolly Robinson 2020-10-28

### Two owners of a cattle ranch, Jo and Val, want to find the average weight for the ranch’s 200 cows. Instead of weighing all of the cows: Jo weighs 25 cows and gets an average weight of 1,350 pounds (stdev 50) Val weighs 100 cows and gets an average weight of 1,420 pounds (stdev 50) What is Jo’s margin of error, rounded to the nearest whole number?

he298c 2020-10-28

### You measure the weight of 49 dogs , and find they have a mean weight of 72 ounces. Let's say the population standard deviation is 13.1 ounces. Based on this, construct a $90\mathrm{%}$ confidence interval for the true population mean dog weight.Give your answers as decimals, to two places

Phoebe 2020-10-28

### The function $\left(9h\right)=8{e}^{-0.4h}$ can be used to determine the milligrams D of a certain drug in a patient's bloodstream h hours after the drug has been given. How many milligrams (to two decimals) will be resent in 7 years?

Annette Arroyo 2020-10-28

### Verify that $‖{r}^{t}\left(s\right)‖=1$.Consider the helix represented investigation by the vector-valued function .

sanuluy 2020-10-28

### Consider the helix represented investigation by the vector-valued function . Solve for t in the relationship derived in part (a), and substitute the result into the original set of parametric equations. This yields a parametrization of the curve in terms of the arc length parameter s.

Rivka Thorpe 2020-10-28

### Need to find a variable. $ax+5=6x+3$ solve for x

CheemnCatelvew 2020-10-28

### Find the mean for the data. The data represents the costs of nine compact refrigerators rated very good or excellent by Consumer Reports on their website.

Chesley 2020-10-28

### Explain the statement ‘The main priority with sampling distributions is to get across the idea that estimates and other statistics change every time we do a new study’.

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