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Questions in Grade College

[Free] Which triangle is the measure of the unknown angle, [tex]$x$[/tex], equal to the value of [tex]$\sin ^{-1}\left(\frac{5}{8.3}\right)$[/tex]?

[Free] Which description best characterizes Elizabeth Van Lew? A. She was a nurse for the North. B. She was a nurse for the South. C. She was a spy for the North. D. She was a spy for the South.

[Free] Osteoporosis is caused by bone demineralization, which leads to porous and fragile bone. Review the list of factors below and determine which patient has the greatest chance of developing osteoporosis. Risk factors: cigarette smoking, early menopause, excessive alcohol use, family history, female gender, age 50 and older, insufficient dietary calcium intake, inactive lifestyle. A. A 65-year old woman who does not exercise and smokes cigarettes B. A 70-year old man who consumes excess alcohol C. A 25-year old woman who jogs D. A 36-year old man who has a mother with osteoporosis

[Free] Simplify. $\frac{6-\sqrt{25}}{4}=$ $\square$ Use a calculator to estimate the value. Round to the nearest hundredth. $\frac{-2-\sqrt{15}}{2} \approx$ $\square$

[Free] According to the Bureau of Labor Statistics, the growth in annual cost to attend college (including tuition, room, board, books, and fees) has outpaced inflation for several decades. The following random samples show the annual cost of attending private and public colleges. Data are in thousands of dollars. Click on the datafile logo to reference the data. Round degrees of freedom to the preceding whole number. Click on the datafile logo to reference the data. The datafile logo. Private Colleges 53.1 43.5 44.7 33.8 44.2 30.2 45.6 37.3 50.8 41.7 Public Colleges 20.0 22.1 28.0 16.1 23.6 28.7 22.4 25.9 18.2 25.1 14.1 21.8 a. Compute the sample mean and sample standard deviation for private and public colleges. Round your answers to two decimal places. x1 = 42.49 x2 = 22.17 s1 = 7.10 s2 = 4.51 b. What is the point estimate of the difference between the two population means? Round your answer to one decimal place. Interpret this value in terms of the annual cost of attending private and public colleges. The mean annual cost to attend private colleges is $20.32 more than the mean annual cost to attend public colleges. c. Develop a 95% confidence interval of the difference between the mean annual cost of attending private and public colleges. confidence interval, private colleges have a population mean annual cost $ to $ more expensive than public colleges.

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

[Free] Gordon and Alexis are assembling fruit baskets for a local retirement home. In the time it takes Gordon to assemble 80 baskets, Alexis assembles 90. In each hour, Alexis can assemble 2 more baskets than Gordon can. If [tex]$G$[/tex] and [tex]$A$[/tex] are the number of baskets that Gordon and Alexis can assemble in an hour, then the equation that describes the relationship is [tex]$\frac{80}{G}=\frac{90}{A}$[/tex]. How many baskets can Gordon assemble in one hour?

[Free] Calculate the wavenumber of a beam of infrared radiation with a wavelength of $5.00 \mu m$.

[Free] What is an important design consideration for work surfaces in a food production area? A. Should be porous. B. Should be free from cracks. C. Should absorb cleaning chemicals. D. Should be made from painted wood.

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