Complete question :
A student forgets to study for an exam consisting of ten multiple choice questions, each with three possible answers. Instead, the student will have to randomly guess, so that there is a 1 3 probability of getting any arbitrary question right. If 6 or more correct answers is a passing score, what is the probability of passing
Answer:
0.07656
Step-by-step explanation:
Given that:
P(correct guess) = 1/3 ; p= 0.33333
Number of questions /trials = 10
P(x ≥ 6) = p(6) + p(7) + p(8) +... + p(10)
This is the sum of the probabilities of getting exactly 6, 7, 8, 9 or 10 questions.
Using the binomial probability calculator to save computation time :
P(x ≥ 6) = 0.07656
The solution to the system is where the lines intercept. If you look at the graph, you see that the lines intercept at (1,2). So, the answer would be C.
Answer:
Q1. (a) (i) p = -9, q = 11
Q3. (a) Line 1: x = 0.5
Line 2: x = -2
Q3. (b) (i) (ii) For both lines, they will be perpendicular to the x-axis and they will pass their respective x-coordinates of 1 and -2 1/2.
Step-by-step explanation:
Q1. (a) (i) 5(-5) - 3p = 2
-25 - 3p = 2
3p = -25 - 2
p = -27/3
p = -9
5(7) - 3q = 2
35 - 3q = 2
3q = 35 - 2
3q = 33
q = 11
Q3. (a) Since all points on Line 1 have x-coordinates of 0.5, we can conclude that the equation is x = 0.5. Same goes for Line 2, of which all points have x-coordinates of -2 instead, making the equation x = -2.
Hope this helped!
Answer:
The diagonals of all parallelograms do not bisect each other at 90 degree angles.
Step-by-step explanation:
Answer:
15x-6
Step-by-step explanation:
3(5x-2)
5x(3)-2(3)
<u><em>15x-6</em></u>