Answer:
subtract
Step-by-step explanation:
Answer:
x = 25
Step-by-step explanation:
0 = 2x - 50
0 - 2x = -50
-2x = -50
x = 25
Answer:
126.4 (rounded to the nearest tenth)
Step-by-step explanation:
53,558/100 = 67739/x
67739*100=53558X
6773900=53558X
6773900/53558=x
126.4070314=X
Use Arizonia as a reference index point. Since it is set at 100, you can put the median income over 100 is equal to California median income over x. Then solve for X.
Answer:
the answer D=1.44
Step-by-step explanation:
if the X= number of red cards observed in 6 trials , since each card observation is independent from the others and the sampling process is done with replacement ( the card is observed, then returned and reshuffled) , X follows an binomial distribution.
X(x)= n!/((n-x)!*x!) *p^x *(1-p)^(n-x)
where n = number of trials = 6 , x= number of red cards observed , p= probability of obtaining a red card in one try
the probability of obtaining the card in one try is
p = number of red cards / total number of cards = 12/ (12+8) = 0.6
since we know that X has a binomial distribution, the variance of this kind of distribution is
variance = σ² = n * p * (1-p)
therefore the variance of X is
variance = σ² = n * p * (1-p) = 6 * 0.6 * (1-0.6) = 1.44
Trapezoid: (a) 1
(b) none
Square: (a) 4
(b) 90°
Equilateral Triangle: (a) 3
(b) 120°
Kite: (a) 1
(b) none
Isosceles Triangle: (a) 1
(b) none
Rhombus: (a) none
(b) 180°
