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
I think the answer to this problem would be C. 2x+8
Answer:
36
Step-by-step explanation:
To get 1/4 of 48 we have to divide 48 by 4
48 ÷ 4 = 12
To get 3/4 of 48 we multiply 12 by 3
12 × 3 = 36
Answer:
x = 4.2
Step-by-step explanation:
72 + 10x = 114
10x = 114 - 72
10x = 42
x = 42/10
x = 4.2
Answer:
5.39
Step-by-step explanation:
you can use the Pythagoras therom to find the answer. Pythagoras therom states that a^2+b^2=c^2 substitute a for 5 and b for 2 and you get 30. Now, find the square root of 30 which is approximately 5.39 Hope this helps!
