Answer:
P(X=0) = 0.7158
P(X=1) = 0.2684
P(X=2) =0.0158
Step-by-step explanation:
Number of defective laptops = 3
Number of normal laptops = 17
If the school chooses 2 laptops from this lot, the number of defectives (X) could be 0, 1, or 2.
For zero defectives:
For one defective:
For two defectives:
Answer:
Area for cross-section is 615.7521601cm
Step-by-step explanation:
area of a circle = πr²
π × radius²
In this question, the radius is 14, so you need to square it giving 196.
Then multiply by π = 615.7521601cm (round if necessary)
Answer:
To find the perimeter of the triangle, you need to add up the three sides of the triangle
/\
1 /__\ 5
9
1+5+9
