Here’s the prime numbers on one dice: 2 3 5, so 3/6. If you have two die then your answer is 6/12. You have a 50 percent chance of not rolling prime numbers on both.
X - the number of questions he answered correctly
y - the number of questions he answered incorrectly
There were 40 questions on the test.

The correct answers were given 5 points each, the incorrect answers were given -2 points each. He made a score of 95.

Set 40-x and (-95/2)+(5/2)x equal to each other:

Johnny answered correctly
25 questions.
W is 61 because both sides are the same, the two lower angles are the same.
Then 3 angles equal 180.
61 + 61 + v = 180
122 + v = 180 (subtract 122)
V = 58
1/4 * -8= -8/4=-2
Basically act as if -8 has a denominator of 1 and just multiply across.
- Hope this helps :)