Cuatro tarjetas, numeradas con los dígitos 1, 2, 3 y 4, se reparten al azar entre dos personas: dos para cada una. ¿Cuál es la probabilidad de que la suma de los números de las tarjetas de las 2 personas sea la misma?

Enter the number of complex zeros for the polynomial function f(x) = x 4+ 5x² +6

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label?

Anew test for ra is being developed. the test is administered to 750 patients with ra and 750 without ra. for the sake of the question, assume the prevalence of ra in this population is 50%. of the 750 patients with ra, 575 have a positive result. of the 750 patients without ra, 150 have a positive result. what is the positive predictive value of the new test? a575/(575+150) b. 600/(600+ 150) c. 575/(575+125) d. 600/(600+ 125)