Я 9-ый класс, поэтому решаю, как училась сама)
log1/2(x+4)>-3
(1/2)^-3 >(x+4)
2^3>x+4
8>x+4
x<4
Ответ: (-беконечность;4)
3х^2-8х+5<span>=0 64-4</span>×3×5=√4=2 (8+(-)4)÷6=2-м корням 1) 0,66 2)2
Sin90=1
cos60=1/2
2·sin90-cos60=2·1-1/2=2-0,5=1,5
2 в минус 9 степени умножить на 2 в 7 степени= 2 в минус 2
1.Do you like listening to music ? No, I don't like listening to music
2. Has he got a clever god ? No, he hasn't got a clever dog
3.Do they can ride a bike ? No, they can't ride a bike
4.Is she swimming now ? No, she isn't swimming now
5.Does Tom never read magazines ? No, Tom doesn't never read magazines