Answer:
i * i = -1
Step-by-step explanation:
W
hen you multiply an imaginary number or i number by another imaginary pure number, the answer is going to be a negative number, due that i *i= -1. The joke is funny because if you do what the recording is saying there you won't have a pure imaginary number and if you dial again, the same would happen again and again.
Answer:
0.30854
Step-by-step explanation:
Given :
Sample size, n = 602
p = 10% = 0.1
q = 1 - p = 1 - 0.1 = 0.9
Using binomial approximation :
Mean, m = n * p = 602 * 0.1 = 60.2
Standard deviation, s = sqrt(npq) = sqrt(602*0.1*0.9) = 7.36
P(x < x - 0.5) = (x - m) / s
x = 57
P(x < 56.5) = (56.5 - 60.2) / 7.36
Z = - 3.7 / 7.36
Z = - 0.5027 = - 0.50
P(Z < - 0.50) = 0.30854 (Z probability calculator)
6x + 4y = 22
+
2x - y = 1
____________
8x + 3y = 23
DONT CLICK ON THE LINK ALSO THE ANSWER IS 12 bc 8 divided by 2=4
4x3=12
Answer:
For that you should prove Ac²=Ab²+Bc²
Step-by-step explanation:
Use distance formula for finding each distance Ac,Ab and BC and prove "Ac²=Ab²+Bc²" as true