Answer:
–0.5
Step-by-step explanation:
Expected value is found by multiplying the probabilities of each roll by the amount won or lost with each roll.
The odd rolls are 1, 3 and 5. The probability of rolling a 1 is 1/6, and the value is 1; this gives us 1/6(1) = 1/6.
The probability of rolling a 3 is 1/6, and the value is 3; this gives us 1/6(3) = 3/6.
The probability of rolling a 5 is 1/6, and the value is 5; this gives us 1/6(5) = 5/6.
Rolling any even number gives us the same value. The probability of rolling an odd number is 3/6, and the value is -4; this gives us 3/6(-4) = -12/6.
Together we have
1/6+3/6+5/6-12/6 = 4/6+5/6-12/6 = 9/6-12/6 = -3/6 = -0.5
Answer:310
Step-by-step explanation:
so use pemdas
Parenthesis,exponents multiplication, division , addition, and subtraction order
231*5-16+101)/4
first i'm assuming the parenthesis is over the whole thing
that the question should look like (231*5-16+101)/4
first parenthesis, 231*5=1,155
1,155-16=1,139+101= 1,240
1240/4= 310.
Hope this helps!
