Answer:
A. The standard deviation is np(1 - p).
Step-by-step explanation:
The variance of the number of successes/failures is measured by (σ2x) is n * P * ( 1 - P ).
The standard deviation (σx) is square root of [ n * P * ( 1 - P ) ]
The mean is np.
it will be d i hope this helps have a good day!!!
66 is the answer. okkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk
<span>times t hours and (t+2) hours)
d1 = 50 t
d2 = 40(t+2)
50 t = 10 + 40(t+2)
10 t = 90
t = 9
</span>
Answer:
x= -6 twice
Step-by-step explanation:
x^2-3x-10/x^2+12x+36
By using undefined fraction we only take the denominator and equate it to 0
x^2+12x+36=0
x^2+6x+6x+36=0
(x^2+6x)+(6x+36)=0
x(x+6)+6(x+6)=0
(x+6)(x+6)=0
x+6=0 or x+6=0
x= -6 or x= -6
therefore x= -6 twice
