Answer:
8
Step-by-step explanation:
logic
Answer:
3x=12
Step-by-step explanation:
3 times X with x being 4 making it 12 so X=4 and 3x=12
Answer:
The probability that exactly 10 insects will die
P( X = 10 ) = 0.06385
Step-by-step explanation:
<u><em>Step(i):-</em></u>
Given a certain insecticide kills 60% of all insects in laboratory experiments
Given proportion p = 0.60
q = 1 - 0.60 = 0.40
Given sample size 'n' = 12
<u><em>Step(ii):</em></u>-
Let "X' be the random variable of binomial distribution

The probability that exactly 10 insects will die



<u><em>Final answer:</em></u>-
The probability that exactly 10 insects will die
P( X = 10 ) = 0.06385
There are 30 rocks in Willy's collection.
Since the number of rocks in Willy's collection is x, the number in Billy's collection is (2 2/3)x or 8/3x.
x+(2 2/3)x = 110
(3 2/3)x=110
11/3x = 110
Dividing both sides by 11/3,
(11/3x)÷11/3 = 110÷11/3
x = 110÷11/3 = 110/1 ÷ 11/3 = 110/1 × 3/11 = 330/11 = 30