480×15=7200(км)-пролетит ракета.
Ответ: 7200 км.
3sin^2x-3sinx*cosx-4cosx+2=0
5sin^2x-3sinx*cosx-4cosx+2cos^2x=0 /cosx
5tg^2x-3tgx-2=0
tgx=t
D=49
x1=-0.4; tgx=-0.4
x=arctg(-2/5)+pik
x2=1; tgx=1
x=pi/4+pik
1) 100*1.12*1.12 - 100 = 25.44%
2) 100 - 0.9*0.75*100 =32.5%
1. b*18 + 312 = 402
b*18 = 402 - 312
b*18 = 90
b = 90 : 18
b = 5
2. 800 - c : 6 = 786
c : 6 = 800 - 786
c : 6 = 14
c = 14*6
c = 84