Avaliao Bimestral - 1 ano - 1 Bimestre

Nome:___________________________________________N________Srie:_______

1) Uma progresso aritmtica finita possui 39 termos. O ltimo igual a 176 e o central e igual a 81. O primeiro termo -14. Qual a razo?______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

2) Sabendo que o primeiro termo de uma PA 5 e a razo 11, calcule o 13otermo:______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

3) Dados a5= 100 e r = 10, calcule o primeiro termo: ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

4) Sendo a7= 21 e a9= 27, calcule o valor da razo: ______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

5) (UFRGS) Em uma Progresso Aritmtica, em que o primeiro termo 23 e a razo -6, a posio ocupada pelo elemento -13 :(A) 8a(B) 7a(C) 6a(D) 5a(E) 4a

6) (UCS) O valor de x para que a seqncia (2x, x+1, 3x) seja uma PA :(A) 1/2(B) 2/3(C) 3(D) 1/2(E) 2

7) Interpole 10 meios aritmticos entre 5 e 38, teremos uma PA de razo:______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________(____,____,____,____,____,____,____,____,____,____)

8) Quantos meios devemos interpolar entre 112 e 250 para termos uma PA de razo 23?______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

9) Se numa PA o quinto termo 30 e o vigsimo termo 60, qual a razo?______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________10) Qual o nmero de termos da PA: ( 100, 98, 96, ... , 22) ?______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Boa Avaliao! Prof Vernica Peres