I’m fairly sure it’s 2N as N is the amount of people. Say there were 100 people that turned up, you would need 200 party favours (obviously because it’s two each) so 2N is 2 x 100 = 200
I’m sorry if it’s wrong! That’s what I would have put :)
Answer: x= -29/43
Step-by-step explanation:
43x+568=539
43x=539-568
43x= -29
43x/43= -29/43
x= -29/43
Rotational symmetry I believe
Answer:
Pr(≥ 70%) = 2/5 = 0.4
Step-by-step explanation:
This question is incomplete as we can't get an exact answer without the dot plot diagram.
We can tell from the question, we are to determine the probability of having ≥ 70% students that play sports
The dot plot diagram used in solving the question has been attached.
Total number of samples = 20
From the dot plot, 50% of students play sport. That is, 50% have more people playing sport than others.
The chance of getting a sample proportion of 70% or greater= probability of students that like sports ≥ 70%
= (sum of people that like sports ≥ 70%)/(total number of sample)
Pr(≥ 70%) = (4+3+1)/20
Where Pr = probability
Pr(≥ 70%) = 8/20
Pr(≥ 70%) = 2/5 = 0.4
"Product" means we are looking at a multiplication problem.
Can be written as:
A number (n) times 50
n x 50
The simplest (and most common way) to write it:
50n