Answer:
0.00259
Step-by-step explanation:
Probability, p of making the correct guess ; 1 / 5 = 0.2
Passing grade = 50% ; 50% * 20 = 0.5 * 20 = 10
q = probability of not passing ;
q = 1 - p = 1 - 0.2 = 0.8
Using the binomial distribution formula :
P(x >=x) = nCx * p^x * (1 - p)^(n - x)
P(x >= 10) = p(x = 10) + p(x = 11)+... + p(x = 20)
P(x >= 10) = 10C20 * 0.2^10 * 0.8^10
P(x >=) 0.00259
Answer:
C. (-2, -2)
Step-by-step explanation:
The equation Y = X states that for every time X is increased or decreased in value, Y also decreases. Essentially, Y is always equal to X. This gives the line a Y intercept of zero, (which means the first point is [0, 0]) and has a slope of 1. Given this, we can check which points match this.
A: -1 does not equal three, so A is false.
B: 2 does not equal 6, so B is false.
C: -2 equals -2, so this is true.
D: 2 does not equal 4, so this is false.
I hope this helped!
Easy,
23y-(7x-2y)+x
<span>There is an imaginary</span> 1 in front of the parentheses, making it,
23y-1(7x-2y)+x
Now, distribute the 1.
-1*7x= -7x
and
-1*-2y= 2y
Leaving your problem looking like...
23y-7x+2y+x
Combine your apples and oranges.....
25y-6x
Thus, your answer.
Answer:
the sum of the first 1000 positive integers is 500500
Step-by-step explanation:
