Answer: Our required probability is 0.304.
Step-by-step explanation:
Since we have given that
N = 21
Number of improperly drilled holes k = 4
Number of properly drilled holes = N-k= 21-4=17
Let X be the number of improperly drilled holes in a sample of 5.
We will use "Binomial distribution":

So, our required probability is 0.304.
Answer:
Step-by-step explanation:
We have the following system
The number of solutions depend on the determinant of the matrix of the system. If the determinant is different from 0, then it has one unique solution, if it 0 then it has infinite solutions.
Note that the determinant of a matrix
is ad-bc. So in our case we have 4*1-(-2)*2 = 8 which is not 0. Then the system has an unique solution.
Answer:
Rs 8000
Step-by-step explanation:
Volume = Base area × Height
If we want to find the cost of carpeting a room, we need to find how much space there is to carpet, which would be the base area of the room.
240m³ = Base area × 3.6m
Base area = 240m³ ÷ 3.6m
Base area = 66
m²
1m² --- Rs 120
66
m² --- 66
× Rs 120 = Rs 8000
A. Simplifies into x - 4. Yes
B. Yes.
C. No, because the exponent is a fraction.
D. No, because √x has an exponent of 1/2.
E. Yes
F. Yes.
So C. and D are not polynomials :)))