1) Plantear y resolver. (PLANTEAR LOS CÁLCULOS EN FORMA HORIZONTAL) a) Una carrera consta de 48 vueltas a una pista que tiene 12 km de
recorrido. ¿Cuántas vueltas de 16 km habrá que dar en otra pista para
recorrer la misma cantidad de kilómetros?
b) Una pared tiene 36 azulejos de largo y 18 de alto. Si quieren cambiar
todos los azulejos, ¿cuántas cajas de 28 azulejos iguales a los de la
pared serán necesarias?

Is the square root of 4 plus the square root of 16 rational?

Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of

Atest of sobriety involves measuring the subject's motor skills. a sample of 31 randomly selected sober subjects take the test and produce a mean score of 64.4 with a standard deviation of 2. a claim is made that the true mean score for all sober subjects is equal to 65. for each part below, enter only a numeric value in the answer box. for example, do not type "z =" or "t =" before your answers. round each of your answers to 3 places after the decimal point. (a) calculate the value of the test statistic used in this test. test statistic's value = (b) use your calculator to find the p-value of this test. p-value = (c) use your calculator to find the critical value(s) used to test this claim at the 0.2 significance level. if there are two critical values, then list them both with a comma between them. critical value(s) =