Answer: 82.93%
Step-by-step explanation:
write a proportion
68/82=x/100
(Why x/100, because in a test the highest you can get is a 100%)
cross multiply
6800=82x
( 68(100) = 82(x))
Isolate the variable
6800/82≈ 82.93 (rounded)
Answer:
(x-2)²/100 + (y+3)²/64 = 1
Step-by-step explanation:
C (2,-3): h=2 k=-3
semimajor axis (CV): a=12-2=10
center-foci: c=8-2=6
semi minor axis: b² = a²-c²= 100 - 36 = 64
equation: (x-h)²/a² + (y-k)²/b² = 1
(x-2)²/100 + (y+3)²/64 = 1
Answer:
For 0 correct answer
For 1 correct answer
For 2 correct answer
For 3 correct answer
For 4 correct answer
Step-by-step explanation:
It is given that there are 4 questions n = 4
Number of choices is 4
So probability of getting correct answer
Probability of getting incorrect answer
Probability distribution is given by
Therefore probability distribution of 0 correct answer
Therefore probability distribution of 1 correct answer
Therefore probability distribution of 2 correct answer
Therefore probability distribution of 3 correct answer.
Therefore probability distribution of 4 correct answer.