The probability that Andrew has heart disease is 0.9. Andrew takes a test for the disease that has an accuracy rate of 75%. What is the probability that Andrew has heart disease and the test accurately predicts it?
Answer: The probability that Andrew has heart disease 
Also we know that the accuracy rate of test 
or 
The given two events are independent.
Therefore, the probability that Andrew has heart disease and the test accurately predicts it 
Answer:
456 
Step-by-step explanation:
Find the height of the trapezoid first (QR):
= 12
QR = 12
Area:
× h = 
× 12
= 456
Answer:
perimeter = sum of all sides. this is same for polygons
rect: area l×b. peri = 2(l+b)
Step-by-step explanation:
15+5 = 20
20*2 = 40 cm is the perimeter of the given figure
Answer:12, 12, 16, 22
Step-by-step explanation:
1. The number that occurs most is the mode
2. The range is the difference between the highest number and the lowest number.
3. The median in this case is the mean of the two middle numbers
If everything else is equal - interest rates and fees and such, the person that starts with the most money will end with the most money.
