Answer:
~3.547%
Step-by-step explanation:
Use the Binomial Probability Distribution:
P(X=R) = nCr*p^r*q^(n-r)
This equals:
30C20*(.8)^20*(.2)^10
Which equals 0.03547089295...
Answer:
a. rad27
Step-by-step explanation:
we can use a2+b2=c2 where c is the hypotonuse.
we plug in 3^2+b2=6^2
9+b^2=36
b^2=27
then do a rad over each to get rid of the ^2 on the b
b=rad 27
answer is rad27
Answer:
x=4+√23 , 4-√23
Step-by-step explanation:
x^2-4x=4x+7
x^2-8x-7=0
now solving from quadratic equation
x=4+√23 , 4-√23
Answer:
133
Step-by-step explanation:
7 + 8(9 -2)
7 + 8(7)
7+56
133
Answer:
y = 2.84
Step-by-step explanation:
y+5.6=8.44
Subtract 5.6 from each side
y+5.6-5.6=8.44-5.6
y = 2.84
