1.cual es el número, que al ser disminuido en 324 es igual a 383. 2.en un negocio de aves, se venden pavos; gallinas y codornices. son todos gallinas menos 5, son todos pavos menos 7 y son todos codornices menos 4, si un cliente compra todas las gallinas y codornices entonces cuantos pavos quedaron.
3.si al comprar una docena de lapiceros me regalan un lapicero. ¿cuántas docenas he comprado si recibo 338 lapiceros?
4.la suma de las edades de a y b es 84 y b tienen 8 años menos que a. encontrar ambas edades.
por favor es muy importante

Hey free points ! people i have a few math questions on my profile consider looking at them i have to get done in 30 mins!

Agroup of student volunteers participates in a study designed to assess several behavioral interventions for improving output in a repetitive task. prior to the beginning of the study, all volunteers unknowingly observed, and their output is measured. at the beginning of the study, prior to any intervention, the volunteers perform the same task under the observation of a study administrator, and their overall output increases. which of the following terms describes this phenomenon? a. simpson's paradox b. hawthorne effect are d. novelty effect d. pygmalion effect e. observer-expectancy effect

Amovie producer conducted a survey after the screening of his movie to find out how the film would be received by viewers from different age groups. the columns in the two-way table indicate the numbers of viewers who rated the film on a four-point scale: excellent, good, average, and poor. viewer's age group excellent good average poor marginal totals 16-25 52 42 12 7 113 26-35 33 50 5 9 97 36-45 58 12 28 34 132 which of these observations is supported by the data in the table? note: a rating of good or excellent means the audience liked the movie, while a rating of poor means the audience disliked the movie. a. the majority of the audience in the 26-35 age group disliked the movie. b. among those who liked the movie, the majority were in the oldest age group. c. among those who disliked the movie, the majority were in the 26-35 age group. d. the majority of the audience in the 16-25 age group liked the movie. e. the majority of the audience from all the age groups disliked the movie