1
1
solve the sistem (3x + 2y = 1
solie the signs - 3y = 4.
a) (1: -1)
b) (-1: 1)
© (1: 1)
d) (-1: -1)
e) (1: 0)
2) what is the solution of the inequality?
9x + 1 > 5x - 15
a) (0; +00)
b) (-00; 4)
© [-4; +00)
d) (-4: 41
e) (-00; +00)
3) students of 7 "b" class do a job in 6
hours and students of 7"'a" class do same
job in 12 hours. after how many hours
they will finish if they work together?
a) 2
b) 3
c) 4
d) 5
e) 6
(x + y = 1
4) solve the equation system: 6x2 - y2 = 3
a) {(0.3). (2.-1)}
b) {(2,-1)
© {(-2.1);
d) {(3.0), (2.1);
e) {(1.-2)​

1LOSI1    2   11.01.2020 10:13    0