1. (ENEM) Há um novo impulso para produzir combustivel a partir de gordura animal. Em abril, a High Plains Bioenergy inaugurou uma biorrefinaria próxima a uma fábrica de processamento de carne suina em Guymon, Oklahoma. A refinaria converte a gordu- ra do porco, juntamente com o óleo vegetal, em biodiesel. A ex- pectativa da fábrica é transformar 14 milhōes de quilogramas de banha em 112 milhões de litros de biodiesel. Considere que haja uma proporção direta entre a massa de ba- nha transformada e o volume de biodiesel produzido. Para produzir 48 milhōes de litros de biodiesel, a massa de banha necessáriaa, em quilogramas, será de, aproximadamente, a) 6 milhōes. b) 33 milhōes. c) 78 milhōes. d) 146 milhōes. e) 384 milhōes.

9. Uppgiften ger max 4 poäng Betrakta summan \( 3+9+15+\ldots+3(2 n-1) \) a. Beräkna denna summa då \( n=5 \). b. Din vän Fatima påstår att \( s_{n}=3 n^{2} \). Visa med hjälp av induktion att Fatima har rätt

1. แท่งตะกั่วทรงสี่เหลี่ยมมุมฉาก มีพื้นที่ฐาน 20 ตาราง เซนติเมตร หนา 1.5 เซนติเมตร แท่งตะกั่วนี้มีปริมาตรเท่าใด วิธิคิด ตอบ

am relaçảo às suas dimensóes, os triànguios que compöem essa estrutura sâo idênticos ada um desses triângulos é classificado como \( \begin{array}{ll}\text { trapézio. } & \text { (d) acutângulo. } \\ \text { escaleno. } & \text { e) obtusângulo. } \\ \text { retângulo. } & \end{array} \)

Does the value of the standard deviation depend on the value of the mean? Yes, because if the mean gets larger, the standard deviation will also get larger. Yes, because the mean must be known in order to calculate the standard deviation. No, because the center of a distribution and the spread are not related.

Select all of the following aspects of Erik Erikson's initiative versus guilt stage of preschool development. Children are in a stage of learning the difference between trust and mistrust Children initiate ideas for play and other activities Developmental focus is on gaining a greater sense of self-control If the ideas and plans of preschoolers fail or are criticized, instead of building confidence children may develop a sense of guilt or self-doubt Through planning and carrying out ideas, children build confidence in their abilities