X=50, P(X=50)=1/100=0.01
X=10, P(X=10)=10/100=0.1
X=100, P(X=100)=5/100=0.05
X=40, P(X=40)=10/100=0.1
X=0, P(X=0)=(100-1-4-5-10)/100=80/100=0.8
контроль: сумма pi=0.01+0.1+0.05+0.1+0.8=1.06
Ответ:
-6.
Объяснение:
(√22+√15)²-(√10+√33)² =
= (22+2*√330+15)-(10+2*√330+33) =
= 22+15-10-33 =
= -6.
9z + 9 - z³ - z² = 0
9(z + 1) - z²(z + 1) = 0
(9 - z²)(z + 1) = 0
(3 - z)(3 + z)(z + 1) = 0
z1 = 3 z2 = - 3 z3 = - 1
p³ - p² - 4p + 4 = 0
p²(p - 1) - 4(p - 1) = 0
(p² - 4)(p - 1) = 0
(p - 2)(p + 2)(p - 1) = 0
p1 = 2 p2 = - 2 p3 = 1