uvsaNNHANoANQu4:'l i
PrroNG cHo oqc vA oAo r4o
oicniNguruc
(g6m 01 trang)
oE xrElr ru ugc rcf r
NAm
ugc
2ot9-2020
rrrdl+:
roAx - rcr6r
oNgey kidm tra:
i6
thiing. 12nFm20l9Thdi gian: 90
phfi
fthdng kE tltdi Sianphil
de)Cia1:
(2,0 ifr6m)ThUc hi€n phdp tinh:
a. 4.52 -81:33
b. 450 + (-310)+ l-37Sel +(-140) c. 100 :
{2s0 : [4so
-(z'.rzs -
z'.zs)'l]Chu2: (2,0
fid@ Timx:
a.
107-7(x+5)=65 b.4(x-1)3
+15=47CiuS:
(2,5 ili6m)a. Thay chflr a, b bdi cric
cht
sti thich hqp dC sd Gab chia cho 2 du 1 nhrmg chia h6t cho 5vi
9.U. Cho A = { x
eN*
/ x i4.
x i 5, x i5 vi
x < 240}.
Hay vi6t tap hSpA
dudi dangliQt kO c6c ph6n tu.
c. Tim s6 t.u nhi6n
li
udc clrung crla hai s5 2n +I
vir 3n + 5voi
n eN' Ciu4
(1,5 itidm)Mrinh vuon hinh
cht
nh4t c6 chi6u ddi 105rn, chi6u rQng 75m. Nguoi ta mu5n tr6ng c6y xung quanhwdn
sao cho m6i g6c vu&n c6I ciy
vd kh-ofurg ciich.gita
2 c6y 1i6n ti6p;ilffir]il111
k]hra"e;6d,
gaa2-cdy li6n tii5p *uo .ho t6ng si5iay trongh
it nh6t.Kii
d6cen trdng sii cdy ld bao nhi6u?
Cdu5t (2,0 ifr6@
Tr€n ctrngtia Ax, ldn luqt i6y hai diiim M
vi
N sao choAM
= 3cm, AN = 8cm' a. Chring-t6 di6m Mnim gita
hai <ti6m A vA N.T*!
AO ddi doan thang MN';. G ,fAy;ii" aai.ffi e*
Tre. tiu Aydy
di6me
sao choA li
trung ditim criaMQ. HAy so srioh dQ ddi doqn thing MQ
vi
MN._HE?-
(Hgc sinh
