1-A) encontrar los términos a1 ; a7 y a40 de la sucesión aritmética 3n-2 y hallar la diferencia. B) calcular el termino 20 de la sucesión geométrica en la que a=2 y r=3.

2-A) la diagonal dé un rectángulo mide 15cm y la base 12cm
¿Cuánto mide el ángulo comprendido entre ambas?
B)hallar los datos faltantes del triangulo oblicuángulo cuyo lado
a= 6cm y sus ángulos b y c miden 45° y 105°

6-dados los siguientes polinomios:
P(x)=x²-4x+2 ; Q(x)=x-3 ;R(x)=x-3 ; R(X)=-3x-x²+5 ; T(x)=X+2

resolver:
A) P(x) - R(x) + Q(x)=
B) Q(x) . T(x) + P(x)=
C) R(x) - P(x) . T(x)=

Ascientist studied a population of workers to determine whether verbal praise and/or tangible rewards affect employee productivity. in the study, some workers were offered verbal praise, some were offered tangible rewards (gift cards, presents, and some were offered neither. the productivity of each participant was measured throughout the study by recording the number of daily tasks completed by each employee. which inference might the scientists make based on the given information? a.) the number of daily tasks completed by each employee may influence the dependent variable, which is whether the employee receives verbal praise, tangible rewards, or neither. b.) verbal praise and/or tangible rewards may influence the independent variable, which is the number of daily tasks completed by each employee. c.) verbal praise and/or tangible rewards may influence the dependent variable, which is the number of daily tasks completed by each employee. d.) the dependent variables, which are verbal praise and tangible rewards, may influence the number of daily tasks completed by each employee.