Assuming that 10% is the probability of a switch being defective (since left-handedness has nothing to do with the problem):
For a binomial distribution, probability(r out of n) = (nCr) (p)^r (q)^(1-r)
p = 10% = 0.1, q = 1 - p = 0.9
r = 2 switches, n = total of 12 switches
probability = (12C2) (0.1)^2 (0.9)^(12-2)
probability = 66(0.1)^2 (0.9)^10
probability = 0.23
Answer:
°
°
°
Step-by-step explanation:
Let the measure of angle C be 
°.
Given:
In triangle ΔABC,
is thirteen less than 
and 
is eleven less than four times . This gives,
Also, 
Now, for a triangle, the sum of all its interior angles is equal to 180°.
Therefore, 
Plug in all the values and solve for x. This gives,
Therefore, measure of angle C is 34°.
Measure of angle A is, 
°.
Measure of angle B is, 
°.
Answer:
1st row =-4
2nd row = 2,-2(from left)
3rd row= -2,-1,2
4th row= -2,1,-1,-2
5th row = 2,-1,-1,1,-2
the answer is 2. because you need to subtract the fractions once you do that you’ll get -2 • (-1) then multiple you’ll have 2 .
Answer:
134
Step-by-step explanation:
let me know if you need an explanation! :D
