Step-by-step explanation:
3x-6 =0
3x= 6-0
3x =6
x=6/3
x=2
Answer:
for every 5 boys there are b girls
Step-by-step explanation:
that's how u read ratios, for every x there are y amount of something else. portions is how we'll describe it!!
Answer:
Binomial distribution = 0.1026
Normal approximation = 0.1066
Step-by-step explanation:
Given that :
p = 100% - 7% = 0.93
n = 300
1 - p = 0.07
Probability of atleast 285 rooms getting booked :
P(x = x) = nCx * p^x * (1-p)^(n-x)
To obtain P(x ≥ 285) ; we use a binomial probability calculator to save time :
P(x ≥ 285) = 0.1026
Using Normal approximation :
Mean (m) = np = 300 * 0.93 = 279
Standard deviation (s) = sqrt(np(1-p) = sqrt(285*0.07) = 4.419 = 4.42
Using :
Z = (x - m) / s
P(x ≥ 285) ; for normal approximation :P(x ≥ x) x = 285 - 0. 5 = 284.5
Z = (284.5 - 279) / 4.42
= 1.2443
P(Z ≥ 1.2443) = 0.1066 (Z probability calculator)
Answer: I think best answer for this equation is A
Step-by-step explanation:but just to be exactly sure I suggest using homeworkla .org just to be sure, but I'm positive it's A.
hope this helps :3
Answer:
addition property
Step-by-step explanation:
Although you need to convert the fractions to have the same denominator, you can simply add them up once you converted them
