Answer:
The probability is that he hits 5.6 out of 7 attempts.
Step-by-step explanation:
Given that an archer hits his target 80% of the time, if he shoots 7 arrows, to determine what is the probability of each event, the following calculation must be performed:
7 x 80/100 = X
560/100 = X
5.6 = X
Therefore, the probability is that he hits 5.6 out of 7 attempts.
Answer:
A.415.69cm
b.323.14
Step-by-step explanation:
The height would be 10cm
The length would be 4cm
Answer:
Step-by-step explanation:
We are given the function:
And we want to find F(<em>b</em> + 3).
We can substitute:
Expand:
Rearrange:
Combine like terms. Hence:
In conclusion:
Answer: There are 495 possible different sets of answers the could contain exactly 8 correct answers of false.
Basically, we are looking for the number of different ways of selecting 8 objects out of a set of 12 objects. Our objects are answers of false and the set is the test.
This is a combination problem. The formula would be:
12! / (8! x 4!) = 495
Answer:
Naomi charges $8 an hour to mow lawns
Step-by-step explanation:
first day // 2 1/2= 2.5 hrs
2nd day // 4 1/4= 4.25 hrs
2.5hrs + 4.25hrs = 54hrs // 6.75hrs = 54hrs
/6.75 /6.75
= 8hrs
Really hope this helps!
