Answer:
0.049
4.9 % of probability
Step-by-step explanation:
The probability of having the disease is equal to 7%
The probability of testing positive, having the disease is equal to 70%
We are looking for the probability of testing positive.
For that, we need to multiply the probabilities to find the result
P = (0.07)*(0.7)
P = 0.049
P = 4.9%
Answer:
For B, 40% of the cars were trucks.
Step-by-step explanation:
If 2/5 of the cars are trucks, and you can convert 2/5 to 20 out of 50, and then 40 out of 100, making it 40%
Answer:
The volume = 267.95 cm³ to the nearest hundredth
Step-by-step explanation:
∵ The volume of the sphere = 4/3 π r³
∵ r = 4
∵ π = 3.14
∴ V =
= 267.946666
∴ The volume = 267.95 cm³ to the nearest hundredth
The discount price will be 0.8X dollars.
Step-by-step explanation:
Given,
Price of an item = X dollars
Discount = 20%
Amount of discount = 20% of Price of item
Amount of discount =
Price of item after discount = Price of item - Amount of discount
Price of item after discount = X-0.2X = 0.8X dollars
The discount price will be 0.8X dollars.
Keywords: discount, subtraction
400-175 =255
Then you divide 225/25 is 9
so 8 more hours